annah-kitathryne

Annaki

They/Them DC Comics DC Favs: Mia Dearden, Tim Drake, Helena Bertinelli, Cassandra Cain, Stephanie Brown; Been detoxing from fanon since before 2018. Ever evolving knowledge as I consume more comics

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Canonical Batfamily Birthdays

Here are all the birthdates I know of that are canon somewhere in DC, with a preference for the main comics continuities. I have included exact sources and image references when possible. I am not including character introduction dates, just actual birthdays.

If you find any other sources for Batfamily birthdays, please do share!

A moment of silence for Batfamily characters who don’t have canonical birthdays yet, so far as I know. This includes Damian Wayne, Stephanie Brown, Duke Thomas, and more. :(

Summary

Source images will be further down, but here’s an overview in roughly age order (I’m not sure of Kate vs Selina’s ages) with the dates the birthdays were introduced and used:

Tim Drake: July 19th (from 2003)

Jason Todd: August 16th (from 2004)

Cassandra Cain: January 26th (from 2002)

Helena Bertinelli: February 14th (in the Batman: The Brave and the Bold universe, from 2010)

Helena Wayne: September 7th (from 1984), potentially October 20th or the 22nd of unknown month or maybe October 22 or maybe Feb 28th (all the New 52 on passports from 2011-2012). These could also be New 52 Helena Bertinelli’s birthdays or nobody’s birthdays. who even knows.

Dick Grayson: March 20th (from 1995), October ~24th ish (from 1990), November 11th (from 1976), December 1st (on Earth-16 in animated Young Justice universe, from 2012)

Barbara Gordon: September 23rd (from 1976), sometime in fall (from 1987)

Selina Kyle: March 14th (from 1976)

Kate Kane: January 26th (in Batwoman TV series from 2020), March 21st? (word-of-god by J.H. Williams III from 2012)

Bruce Wayne: October 7th (from 2021), February 19th (from 1970s various to more recently), April ~7th (from the late 1940s)

Jim Gordon: January 5th (from 1976)

Alfred Pennyworth: April 8th (from 1976), August 16th (in the Injustice: Gods Among Us universe, from 2016)

Note: in this post when I say “main comics continuity(s)/universe” I’m referring to anything that’s been a “home” continuity for the comics at some point. For example, pre-Crisis Earth-2, Earth-1/New Earth, and Earth-0/Prime Earth, as opposed to Elseworlds or DCEU earths that are still part of the broader DC multiverse but have never been the primary continuity of the comics.

Below are further details and source panels.

Details and Sources

Tim Drake

Tim has only been given one canon birthday. He turned 16 on July 19th in Robin Vol. 2 #116 (cover date Sep 2003).

A comic page showing Tim Drake with his dad, stepmom, Stephanie Brown, and Sebastian Ives in the Drake family downtown apartment. Tim comes into the kitchen jokingly demanding what's going on and they direct him to a pizza box. He opens it and is astonished at himself for being a detective and yet forgetting his own birthday. The ham on the pizza says Happy B-day Tim. Tim starts laughing as they bring out party supplies.

Robin Vol. 2 #116 (Sep 2003)

Jason Todd

Jason turned 18 on August 16th in Detective Comics #790 (March 2004). This is his only canon birthday.

A pale blue narration box that says the date is August 16th. 1:15 A.M.

A comic page showing a Gotham Cemetary. A pale blue narration box shows Bruce Wayne saying, “There’s someone I want you to meet.” Bruce and Cassandra Cain, both wearing long trenchcoats, stop by a grave with an angel statue. The bottom is engraved “Here lies Jason Todd.” Bruce says to the grave, “Happy birthday, kid.” Cass looks at the mournful Bruce and says, “No one talks about him. All I know is...he was the second Robin. And that the Joker kil--” Bruce interrupts to say, “He would have been eighteen today.”

Detective Comics #790 (Mar 2004)

In post-Crisis/preboot (1986-2011) continuity, there was a gap of six months between when Jason died and when he was resurrected (Batman Annual 25). Jason died April 27th according to his death certificates in Batman Annual 25 and Batman Files 2011, so he would’ve resurrected near late October.

A comic page showing an upset Batman holding Robin Jason Todd’s bloody body. Narration says “For awhile that is.” The next panel shows Superboy Prime punching reality, causing glittery, starry purple trails to float through Gotham at night. Narration continues, “...Until time decided to set things right.” The glittery dust travels into a cemetary and narration says, “Six months later.” The dust travels to a grave where you can barely read: “Here...Jason.”

A comic page showing Jason’s decayed hands folded over each other and resting on Jason’s chest. He’s wearing a suit. A starry gold and purple shimmery dust floats to him. As it brushes against him, his hands heal and he raises them, waking up with a gasp.

Batman Annual 25 (May 2006)

So, it could be that post-resurrection Jason is biologically 6 months younger than he chronologically should be. But honestly, do we even really know what multiverse-breaking resurrection punches and then a Lazarus Pit on top of that do to someone’s body??? Either way it’s just much more simple to just use his chronological age.

Cassandra Cain

Much like Tim and Jason, Cass has only ever been given one birthdate: January 26th from Batgirl Vol. 1 #33. With that birthday, she turned 18 in Batgirl Vol. 1 #37.

Batgirl Vol. 1 #33 (Dec 2002)

When Jan 26th actually comes, Bruce suggests David Cain could’ve lied about it, but Cass denies that idea and continues to treat the day as her birthday.

A comic page showing Bruce, Cass, and Barbara Gordon in Oracle’s clock tower. Cass and Bruce are in their Batgirl and Batman suits. Cass asks the date and Babs says it’s the 26th. Cass looks down at the knife she just recieved as an anonymous gift and shares that David Cain told her this date is her birthday. Bruce immediately says it’s a trick because Cain couldn’t know an abandoned baby’s birthday. Cass says, “You mean...he lied?” but then their conversation is interrupted by Oracle telling them about a police band alert.

Batgirl Vol. 1 #37 (Apr 2003)

Why it's likely her real birthday: Bruce initially believes Cain must’ve lied because he doesn’t think Cain could’ve known her birthday. However, we later learn Cain had lied about her origins and was actually her biological father. Batgirl v1 #62 and #73 show he was there for her birth and could absolutely know the date.

On top of that, in Batgirl #37 Cass remembers celebrating her birthday with him as a child, so he did seem to actually keep track of it. I honestly don’t see any reason to believe he’d lie (Bruce is just a jealous spoilsport).

Helena Bertinelli + Wayne

I’m combining them here because the New 52 gives me a headache.

Helena Bertinelli celebrated her birthday on February 14th in a spin-off comic from the animated Batman: The Brave and the Bold series. This is obviously not part of regular comics continuity and the characters differ from the usual comics in many ways. And yet, for reasons that will soon be clear, it’s my favorite for actually being about Helena Bertinelli the Huntress and for not being an utter mess.

A comic panel showing Batman running onto a Gotham rooftop at night. He stops in front of the Huntress, demanding to know where someone is. Helena says he’s gone and that she imagined they’d spent tonight very differently. He sternly insists they get back to defeating their supervillain, but Helena interrupts him to say, “Do you have any idea what today is?” Bruce says, “February 14th.” Helena says: “And...?” Bruce says, “Valentine’s Day. A date wholly irrelevant to our mission.” Helena yells, “It’s my birthday!” in his face. Surprised, Bruce says, “Oh. Um...Hunh.”

Batman: The Brave and the Bold #14 (Apr 2010)

In a character profile at the end of Infinity Inc. #7 (Oct 1984), Helena Wayne’s birthday was September 7th, 1959. Calculating back from October 1984, that would make her 25 at the time.

During the New 52, Helena Bertinelli was initially portrayed as a long-dead (secretly alive but don’t worry about it) mobster’s daughter and replaced by Earth-2’s Helena Wayne who got stranded on Prime Earth. This H. Wayne stole H. Bertinelli’s identity in the form of several forged passports and IDs, which had hints toward birthdates. The question is, can we take any of those birthdates seriously, and if so, which birthdates and for which character? (Cue my headache.)

Skip ahead to Dick if overthinking fake passports sounds boring.

When comparing to a real Italian passport, the date on H. Wayne’s fake Italian passport appears to be a birthdate. Note that the fake name is Carol Bertinelli, not Helena. H. Wayne said her IDs were inspired by H. Bertinelli but clearly she’s taking liberties for the IDs so that’s a point toward these being useless for H. Bertinelli birthdays.

A comic panel showing Helena Wayne of Earth-2 setting her fake Italian passport on a table. The passport says “Republica Italia. F, ITA. Carol Bertinelli, [illegible]. Italiana. 20 ‘O/CR[?] 1985. A [illegible].”

Huntress Vol. 3 #1 (Dec 2011)

I don’t recognize the month abbreviation as a real abbreviation, but from the visible letter O I’m going to assume it means October. If it is, then the date is 20 October 1985. Sidenote: a 1985 birthdate during 2011 could put her age at about 26, which is actually quite close to how old she could’ve been based on pre-Flashpoint! 1985 has been given as Helena Wayne’s death year before, so it’s an interesting choice of a birth year for her. (Thanks to DC’s sliding timescale, though, birth years don’t actually mean anything in the comics.)

They don’t show her complete US passport, but I can see a “22” in line where the day of the month should be for her birthdate. This already contradicts the previous passport. This one uses Helena Bertinelli’s actual name, though–does that make it more relevant than the Carol one or this all still ridiculous because of the discrepancies?

A comic page of Helena Wayne and Karen Page with Helena’s fake passports in Tokyo. Helena’s US passport has a photo of herself with some of the text and machine readable passport number visible. From the line where her date of birth belongs, you can see the number 22 before it's cut off. The passport number says P<USABERTINELLI<<h before cutting off, then the next line 1233211231USA810228. Helena burns her passport, and Karen compliments her on how she had acted for it. Helena says the identity on the passport was real, borrowed from an interesting dead woman. She holds up more fake passports and wonders who to be next.

Worlds’ Finest Vol. 1 #1 (Jul 2012)

We can try to glean the US passport birth month from the passport number at the bottom. The first two digits (“12” here) indicate the agency that issued the passport. 12 means the Honolulu agency. Right after “USA” is supposed to be the birthdate plus an extra number, in the order of year/month/day with the year being the last two digits of a year. Here we encounter another problem. It says 810228. This would imply her birthdate is 1981/02/28. That’s February 28, 1981. Since the earlier line indicated her birthday fell on a 22nd, this already contradicts itself.

An image guide for what every part of the machine readable passport numbers mean. Next to the part signifying nationality is the date of birth in YYMMDD format, followed by a check number for the date of birth.

Interpreting a Machine Readable Zone (MZR) on a Machine Readable Travel Document (MRTD)

However, I’d bet comic writers and artists aren’t always well versed in passport numbers (it’s already a stretch for me to bother checking it…). If they put the extra digit before the birthdate instead after, and the date is formatted month/day/year (the most common format in American English, so probably their first instinct), then we can drop the first 8 and it’s 10/22/8[?] with the last digit unknown. This would put her birthday as October 22, sometime in the 1980s. The 22 matches the earlier line, the October might match the previous passport if that really did say October (but contradicts the 20th), and the 1980s year could be 1985 to match the Italian passport.

At the end of the day I’m personally just going to let Helena Bertinelli be a Valentine’s born baby and call it a day, unless/until she gets a better one in the comics. For Helena Wayne I’d easily pick September 7th.

(My question is: did they give the crossbow vigilante a Valentine’s birthday as a Cupid joke??)

Dick Grayson

Dick has probably had the most birthdays of everyone (unless Bruce has more I don’t know about). All of them have their drawbacks.

In a main comics continuity, his most popular and most recent is “the first day of spring” so probably March 20th. This comes from Robin Annual 4 when his mom says she calls him Robin because he was born on the first day of spring. That presents some problems since there are other explanations given for the origin of “Robin,” including that his mom said he was “always bobbin’ along” (Dark Victory #12, page 17) or the original inspiration of Robin Hood (Detective Comics #38, p3).

A comic panel of Mary Grayson holding her toddler son Dick, with John Grayson in the background. Mary says in Dick’s ear with a smile, “I call you Robin because you came to us on the first day of spring. I didn’t know you’d want to be a little bird...” Dick isn’t looking at her as he smiles and reaches ahead of him, only held back from leaping by her hand.

Robin Annual 4 (Jun 1995)

Before that, in Secret Origins Vol. 2 #50 (Aug 1990), Marv Wolfman wrote a version of Dick’s origins where Dick turned 10 a week before his parents died on Halloween. That would make his birthday October ~24th (presuming that “a week” before Halloween literally means 7 days here).

An image of serif text that says: “Young Dick Grayson believed what his father said, would have believed anything Johnny Grayson told him, until that Halloween a week after his tenth birthday.”

Secret Origins Vol. 2 #50 (Aug 1990)

The first drawback of the October birthday is that it’s tied to Dick being 10 when his parents die on Halloween. Dick’s age and the date his parents die change a lot depending on the writer (Nightwing Vol. 1 #1 says his parents died June 27th, Dark Victory #8-9 says May, etc.). The second drawback is that few people remember this version of his birthday even exists.

Dick’s birthday is November 11th in Super DC Calendar 1976. Note: Despite being a non-diegetic calendar from almost 50 years ago, this source remains well known and used among comic enthusiasts (including those working at DC). Generally, I would say it should mainly apply just to pre-Crisis continuity, but it is also useful for characters that haven’t gotten updated birthdays ever since (like Roy Harper, Barbara Gordon, or Selina Kyle, for example).

A calendar page for November 1976. On Thursday the 11th it says “Birthday of Dick Grayson (Robin).” Another notable birthday: Roy Harper’s on November 1st. Nearly every day is filled with a hero or supporting character’s birthday.

Super DC Calendar 1976

Sidenote: Since Damian doesn’t have a canon birthday, November 11th is favorite to steal for my own fan canon Damian birthday. Dick has plenty birthdays to share and I think it’s cute. @ DC, give Damian and Steph birthdays, they’ve been birthday-less for decades!

Indeed, DC writer Tim Sheridan and editor Mike Cotton debated whether Dick’s birthday was in March or November. They favored March 20th and wrote a birthday scene in Teen Titans Academy #1 (published March 23rd, 2021). The publishing time near Dick’s birthday was intentional, though the date isn’t mentioned within the comic itself.

A tweet by Nightwingology (@ Nightwingology) on Mar 25, 2021 that says: “It's pretty cool that they celebrated Nightwing's birthday in Teen Titans Academy, since Dick's birthday actually was the other day. Not sure if that's intentional or a wild coincidence, but well played @ iamtimsheridan! (Teen Titans Academy #1 and Robin Annual #4).” Attached are a photo of the Titans celebrating Dick’s birthday in Teen Titans Academy #1 and the earlier panel of Mary Grayson saying Dick’s birthday is the first day of spring. Spider-Knight (@ SpiderKnightART) replies to the tweet saying, “In an interview, Tim confirmed this was intentional!” Tim Sheridan [rainbow emoji] [arrow soon emoji] SDCC (@ iamtimsheridan) replies “I remember talking to the editor about it and there was some question about whether his bday was in March or November and I said, “I’m not here for that noise. His bday is March 20th, let’s gooooo.” Cotton was like “It’s on.”

Link to tweet

The above birthdays were all meant to apply to a main comics continuity at some point. However, Earth-16, better known as the animated Young Justice universe (therefore outside of main comics continuity), says YJ Dick’s birthday is December 1st.

A comic page showing Mount Justice in the Young Justice cartoon universe. Text in the corner says the date is December 1, 16:16 EST, Team Year Zero. Dick Grayson/Robin is walking toward the zeta tunnels when Zatanna calls, “Hey, Boy Wonder.” She kisses his birthday and says, “Happy birthday!” He rubs the back of his neck, smiling, and says “Uh...thanks.” His smile falls away and he cocks an eyebrow, saying, “Hold on. How’d she even know it’s my birthday?” Wally/Kid Flash appears next to him and says, “Dude. You’re welcome.”

Young Justice Vol. 2 #20 (Nov 2012)

Unlike Helena Bertinelli, Dick has plenty of comics birthdays to choose from, so personally I’ll only count Dec 1st as being the birthday for YJ animated/Earth-16 Dick Grayson until or unless it’s ever mentioned to apply to main comics continuity.

Barbara Gordon

Super DC Calendar 1976 says Barbara’s birthday is September 23rd.

Super DC Calendar 1976

Since then, the only time I recall her birthdate hinted at is in Secret Origins #20 when her adoptive mom says her birthday is in the fall. This could support her birthday being September 23rd.

A comic panel showing young Babs celebrating as she holds a letter. She says, “I’ve been accepted! Gotham State, here I come!” Her adoptive parents Barbara Eileen and Jim Gordon watch, and Barbara Sr. says, “She’ll only be 16 this fall! Isn’t it too early?” Jim proudly says, “Not for Babs.”

Secret Origins Vol. 2 #20 (Nov 1987)

Although she has celebrated her birthday on panel since then (the end of Nightwing Vol. 2 #153), she hasn’t been given any other actual birthdate. So I’ll keep September 23rd and call it a day.

Selina Kyle

Super DC Calendar 1976 says Selina’s birthday is March 14th. Once again, although it hasn’t been mentioned within a comic, it’s stuck around in popular consciousness (see: Catwoman actress Zoë Kravitz wishing Selina a happy birthday on March 14th).

Super DC Calendar 1976

Selina celebrated a birthday on panel in Catwoman (2002) #37 but the date was never mentioned. I don’t know of any other reference to her birthday, but my reading of Selina is thus far more sparse than my reading of the others.

Kate Kane

Kate’s birthday options all come from outside of the comics themselves.

In “An Un-Birthday Present,” season 1 episode 11 of Batwoman, a parallel version of her twin Beth had a driver’s license showing her date of birth as January 26, 1990. She and Kate later celebrated their birthdays on an episode aired Jan 26th, 2020. I don’t keep up with live action DC shows so I unfortunately can’t offer a screenshot (if anyone has one or the timestamp, please let me know!).

(I kinda wonder if somebody looked up Batwoman’s birthday for these episodes, saw Batgirl’s (Cass’s) birthday, and just ran with it. Batwoman and a Batgirl sharing a birthday is just. Ughhh.)

In 2012, one of her comic writers tweeted to choose a random date for her birthday and picked March 21st, which so far as I know has never been used as her birthday in comics.

A tweet by DC Women Kicking Ass (@ dcwomenkicknass) from Sep 23, 2012 says: “@UncannyCanny, No clue. Maybe @JHWilliamsIII knows when Batwoman’s birthday is?” A reply by Beware, A Mad Wizard (@ JHWilliamsIII) says: “@dcwomenkicknass, @UncannyCanny, Hmm…Lets say late March 21st, Thats as good as any other date really ;^)”

Link to tweet

Bruce Wayne

Bruce’s most popular birthday is February 19th, but his most recent one is October 7th from the digital-only comic Legends of the Dark Knight. I believe that’s the only time October 7th has been referenced, but I’ve heard the animated show The Batman said his birthday was in October (can’t confirm, haven’t watched it recently).

A comic page. It shows a supervillain then Martian Manhunter and Batman talking as Bruce returns to the Batplane with J’onn by his side. They discuss countering the villain who’s powers surge on important Martian holidays. J’onn says, “October seventh is the next convergence...it was once known as the morn of the liberated on ancient Mars.” Batman pauses then says, “That’s my birthday.” J’onn says, “Ahh, wonderful. Should I bring you something?” Bruce says, “Maybe you come through the teleporter by yourself next time.” J’onn says, “Hmm...I suppose we’ll have to see. Good night, Bruce.” Bruce begins flying the Batplane away as he says, “J’onn,” in farewell. The corner marks this as the end of the issue.

Legends of the Dark Knight #10 (Jun 2021) - Note: two pages have been combined into one for this post

Still, even associates of DC seem to remember his February 19th birthday better. In February 2023, Warner Bro’s Gotham Knights game did a sale for Bruce’s birthday. I’ve also heard the birthday was used in the Gotham TV show, but again, I don’t watch much live action DC shows.

The February 19th birthday appears to come from the 70s and 80s. It’s his birthday in the Super DC Calendar 1976, and in Batman Family Vol. 1 #11: “Suprise, Suprise!” (May 1977). Bob Rozakis (known as DC’s “Answer Man”) said Feb 19th was Bruce’s birthday in the letter column of Detective Comics #494 (Sep 1980).

An old letter column that says, “Q: When is Batman’s birthday?--Kenny McKoen. A: February 19th.”

Letter column of Detective Comics #494 (Sep 1980)

A comic page with a narration box that says, “February 19th, 6:30 P.M.--A shiny sports car pulls up in front of Wayne Manor--bringing a double surprise--news photographer Vicki Vale Powers and Bruce Wayne!...” Bruce opens the car door for Vicki and asks what Vicki’s husband when he finds out she came here with him, her ex-boyfriend. She says it’s a hazard of the job and she needs photos tonight for a feature on stately homes of Gotham. Bruce enters with her, starting to speak but is interrupted by people yelling surprise and singing happy birthday. A crowd of people including Alfred Pennyworth are gathered just inside, with decorations and wine.

Batman Family Vol. 1 #11: “Suprise, Suprise!” (Jun 1977)

A calendar page for February 1976. On Thursday the 19th it says “Birthday of Bruce Wayne (The Batman).” Kal-El/Superman and Captain Marvel’s birthdays are both on the 29th.

Super DC Calendar 1976

Way back in the 40s, his birthday was in April, possibly April 7th. During a birthstone murder mystery, Bruce says his birthstone is a diamond, which is traditionally the April birthstone.

A comic page that shows Dick/Robin shoving a giant flaming ruby off a boat as he puns, “Your birth-stone was nearly your death-stone!” After Robin notes what happened, Bruce/Batman congratulates him on his good thinking for guessing. Then he says, “But James Harmon is still at large, and must be planning to use a diamond-replica birthstone to murder the fifth museum director.” Robin says, “And that’s Bruce Wayne--you! Maybe he’s already sent a deadly replica to our house!” They head home but don’t find any deadly diamond. The corner says this is page 8.

World’s Finest Comics #33/6 (Mar-Apr 1948): “The 5 Jewels of Doom!”

Star Spangled Comics #91 (Apr 1949) might imply the exact date was April 7th but we’d have to assume the party is on his birthday and that “this month” refers to the publishing month of April. I believe this is where people get the April 7th birthday when they bring it up.

A comic page showing an invitation in fancy writing that says, “You are cordially invited to attend the Birthday Part of Bruce Wayne, to be held the 7th day of this month. Dinner will be served at 7 o’clock.”

Star Spangled Comics #91 (Apr 1949)

Early April also shines in Batman: Year One where it shows Bruce’s first night out as Batman being either the night of April 6th or the early morning of April 7th (Batman #405). So although the April Bruce birthday hasn’t been used in decades, it’s still a Batman birthday in a way.

I have also heard people say Frank Miller considered Bruce’s birthday to be in November. However, I have yet to find an original source of him saying that, and honestly (just like the “March 21st” birthday for Kate) if he never used it in any canon material I don’t put much weight in that.

Jim Gordon

The only birthday I’ve ever seen for Jim is January 5th from Super DC Calendar 1976.

A calendar page for January 1976. On Monday the 5th it says “Birthday of police commissioner James W. Gordon of Gotham City.” Another notable birthday is Wally West/Kid Flash on the 16th.

Super DC Calendar 1976

Alfred Pennyworth

Alfred’s birthday in Super DC Calendar 1976 is April 8th.

Super DC Calendar 1976

In the Injustice: Gods Among Us universe (an alternate reality where the video game of the same name is set in), they show Alfred’s birth certificate, where it says his birthday is August 16th, 1943.

A comic panel showing some photos and medals lying on the ground next to a birth certificate. The photos show a younger Alfred Pennyworth in Britain and with young Bruce Wayne. The birth certificate says, “Name and Surname: Alfred Thaddaus Crane Pennyworth. Sex: Boy. Date of Birth: Sixteen, August, 1943. Place of Birth, Registration District: Berkshire, Sub-district: Windsor.” The certificate continues with local authority’s and witness confirmation. From off-panel, someone says, “Alfred knew everything.”

Injustice: Gods Among Us Year Five #26 (Jun 2016)

Maybe you’ll notice that August 16th is Jason’s birthday. A little funny considering the issue features Alfred refusing to share his birthday only for us to learn it’s the same date as Jason’s. Still, annoying. There are so many days in the year! Stop choosing the same ones!

This Alfred birthdate runs into a similar problem Helena’s birthdates did: it’s not part of main comics canon, it’s an alternate universe, so it may not be applicable to the main comics universe.

Note: if we calculate that 1943 birth year from Jun 2016 when the comic was published, that’d make Alfred 72 soon to be 73. Does that mean anything in canon? Probably not, but oh well. Also...token British character born by Windsor Castle? …of course.

Personally, I would rather go with the April 8th birthday than the Injustice one, since Injustice is an alternate universe. Also, outside of the humor of it, the idea of Alfred and Jason sharing a birthday is a bit too much for me. Still, it’s up to people’s own cherry picking.

Chronology

The birthdays in publishing order alongside notable reboots. A soft-reboot refers to reboots that only changed a few details with minor consequences, keeping the overall continuity mostly intact. A major reboot has significant effects on continuity (too many to list).

1935-1986: Pre-Crisis era (Golden Age begins ~1946, Silver Age runs from late 50s--early 70s)

Mar-Apr 1948: Bruce’s birthday is in April

Apr 1949: Bruce has a birthday party on the 7th of “this month”

Skipping a good three decades because I barely even know what’s in there. Sorry lol

Mid 70s to early 90s: Bronze Age era

1976: the super dc calendar says Bruce’s birthday is February 19th, Alfred’s is April 8th, Dick’s is November 11th, Babs is September 23rd, Selina’s is March 14th, Jim’s is Jan 5th

Jun 1977: Bruce celebrates his birthday on February 19th

Sep 1980: letter collumnist says Bruce’s birthday is February 19th

Oct 1984: Helena Wayne’s birthday is on September 7th, 1959

Mar 1986: the major Crisis on Infinite Earths reboot (begins post-Crisis/New Earth era, many previous comics are now considered Earth-2 instead)

Nov 1987: Babs birthday is in fall

Aug 1990: Dick turns 10 a week before Halloween (probably October ~24th)

Sep 1994: Zero Hour soft reboot (Batman and Robin become urban legends so Robin is not allowed on video, Bruce’s parents’ murderer is changed to unknown instead of Joe Chill, Selina is no longer a once-prostitute)

Apr 1995: Dick’s birthday is the first day of spring (probably March 20th)

Oct 2002: Cass learns her birthday is January 26th

April 2003: Cass turns 18 on January 26th

Sep 2003: Tim turns 16 on July 19th

Mar 2004: Jason turns 18 on August 16th

Jun 2006: Infinite Crisis soft reboot (Joe Chill is restored as the arrested Wayne family murderer, Superboy-Prime's punch retroactively resurrects Jason)

Apr 2010: In the Batman: Brave and the Bold universe, Helena Bertinelli celebrates her birthday February 14th

Oct 2011: the major Flashpoint reboot (end of post-Crisis/preboot, begins the New 52 and changes the primary universe to Prime Earth; significant character/timeline changes and erasures)

Dec 2011: Helena Wayne’s fake Carol Bertinelli passport seems to list October 20th as a birthdate

Jul 2012: Helena Wayne’s fake Helena Bertinelli passport lists some 22nd unknown month, Oct 22nd, or Feb 28th birthday

Sep 2012: Batwoman writer J.H. Williams III randomly picks Kate’s birthday as March 21st on Twitter

Nov 2012: Earth-16/YJ animated Dick Grayson celebrates his birthday on December 1st

Jun 2016: In the Injustice: Gods Among Us universe, Alfred’s birth certificate says his birthday is August 16th

Jul 2016: Rebirth reboot (restores some pre-Flashpoint continuity, some characters regain previous histories but now semi-synchronized with the New 52 era)

Jan 2020: Batwoman TV show Kate celebrates her birthday on January 26th

Mar 2021: Writer Tim Sheridan says he & his editor chose March 20th as Dick’s birthday, between the March or November birthdays

May 2021: Infinite Frontier holds all previous continuities as potential canon, restoring more of pre-Flashpoint

Jun 2021: Bruce says his birthday is October 7th in a digital-only comic

Feb 2023: Gotham Knights game has a sale for Bruce’s birthday