https://www.pcgamer.com/heres-when-you-can-play-final-fantasy-14s-little-ladies-day-event/

Final Fantasy XIV's Little Ladies Day will take place from March 1, 2018, until March 14, 2018. 

Idol group Songbirds will be returning to perform, and you'll be able to participate with a range of new glowstick-y emotes for the celebration (Cheer Jump, Cheer Wave, and Cheer On), as well as collect the exclusive items Far Eastern Doll Display, and the Siren Song Orchestrion Roll.