WikiMoon:Anniversaries/March 21
- Wakana Yamazaki, the voice of Koan in the Sailor Moon anime, was born on this day in 1965.
- Miyako Endou, the voice of Unazuki Furuhata in the Sailor Moon anime, was born on this day, also in 1965.
- Shiho Niiyama, the voice of Sailor Star Fighter in the Sailor Moon anime, was born on this day in 1970.
- Anime episode 3, "Mysterious Sleeping Illness! Protect the Girls' Hearts in Love," premiered in Japan on this day in 1992.
- The eighteenth episode of Sailor Moon Crystal, "Act.18 Shinryaku - SAILORVENUS -," premiered on this day in 2015.