Why do Usagi and Chibiusa have the same birthday?

  • This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.
Sep 6, 2014
Got me thinking if all the Moon lineage have the same birthday. Then I realised... If you are born on the moon how do you even figure out your birthday, what with time zones and all.
We don’t actually know when Princess Serenity was born relative to the Gregorian calendar.

Much as the series acts otherwise, Usagi Tsukino and Princess Serenity are two different people. Usagi Tsukino was born on June 30th we don’t “technically” know when Princess Serenity was born.

Neo King Rose

Usagi's Rose
Staff member
Site Admin
Sep 13, 2008
in my aesthetic
cause they were both conceived in october if you wanna get down to the physical element

maybe it's sign of moon royalty to be born on June 30th as is for one to carry the Serenity name
is it official? no just a simple idea of why
Jul 6, 2018
It is just because the story revolves around their similarities and they are both guarded by the Moon. It is entierly possible that even Princess Serenity and Queen Serenity shared the same birthday and it has to do with the Moon Royal family. I happen to share the same birthday with my grandfather and so we share the same name as well.
Last edited: