WikiMoon:Anniversaries/April 4
- Sara Shimada, the fifth actress to play Michiru Kaiou/Sailor Neptune in the Sailor Moon musicals, was born on this day in 1976.
- The nineteenth episode of Sailor Moon Crystal, "Act.19 Time Warp - SAILORPLUTO -," premiered on this day in 2015.
- The twenty-seventh episode of Sailor Moon Crystal, "Act.27 Mugen 1 Yokan ・ Zenpen," premiered on this day in 2016.