This year there are a lot of Clothing and Rares; below there are the release dates:
Clothing
Oversized Sunglasses: from 04/03/2016 – to 07/03/2016
Spaceman Helmet: from 11/03/2016 – to 14/03/2016
Mermaid Hair: from 18/03/2016 – to 21/03/2016
Noble Crown: from 25/03/2016 – to 28/03/2016
Rares
Verdant Habberge Egg: 16/03/2016 at 16:00 GMT
Efflorescent Habberge Egg: 19/03/2016 at 16:00 GMT
Dragon Habberge Egg: 23/03/2016 at 16:00 GMT
Burnished Habberge Egg: 26/03/2016 at 16:00 GMT
via. Habbo.com