I pulled all these dates from the available info on everyone's profile. If you do not want your birthday listed here or if you do and it isn't, please let me know and I'll edit the list accordingly.

January
01: Lori Morning
02: Umber & the Boyz
07: Varalent
10: M'onel
19: Greybird
22: MLLASH
29: Kid Prime
30: TempestGarden

February
06: Shady
09: Poverty Lad
11: Paul Newell
14: LoriMorning

March
04: Dashel
08: LARDLAD
10: Airboss310
11: Greg Geren
15: Loser Lad
17: rokk steady
18: Kid Quislet
19: Fred
19: Mike
21: saturnrings
24: Beyonder
24: Ankle Boy
31: Dev Em

April
09: dragorat

May
06: Harold
13: Faraway Lad
13: flying_postman
14: Lightning Lad
15: Rusty Shackleford
19: Superboy-Supergirl
21: lancesrealm
24: Looks That Kill Lad
26: Nightcrawler

June
02: Star Boy
06: Pulsar
07: yarky
09: Ferrari
16: LoneWolfLondo
16: Danny Blaine
19: ohhhied
20: lil'rhino
28: queer legion
28: Brian

July
01: Princess Crujectra
04: Blockade Boy
09: beardguy57
11: icefire
23: deanlegion
24: SunBoy
25: Shadow Wolf
30: Giant Robotic Lesbian

August
01: Outdoor Miner
01: The Perfect Boyfriend
03: LSHJSA
10: Healex
11: Sanity or Madness?
16: Myg
18: Fat Cramer
22: brainy5
23: the boy with UltraPowers
31: Owl Lad

September
02: eboladude
05: Duplicate Man
06: freekdkid
08: Omni Craig
08: braalian
11: David King
15: toddschoonover
18: The Big Bad
19: Eat More Matter
23: matter-eater man
25: He Who Wanders
25: Kevin

October
04: Dylan Clearbrook
07: Future
13: Beagz
19: matlock
19: numberonelegionfan
19: TheDaxamite
20: Estimate Lad
22: mogli
29: Igee the Mighty

November
11: Winbehr
14: jimgallagher
16: jemfinger
22: brigort
25: ActorLad
30: Portfolio Boy

December
05: superboymddjr
21: the Maritimer
31: Saturn Girl