Just announced via Twitter for Europe, North America, and Japan (also Hong Kong). It will last 5mn.
Europe: 4PM
UK: 3PM
North America (ET): 10AM
North America (PT): 7AM
Japan: 12AM (February 27th)
Australia: 2AM (AEDT)
Links
Europe: official website / Twitch
North America: official website / Twitch / YouTube
Japan: official website / NicoNico / YouTube
Australia: official website
Hong Kong: Nintendo website (no livestream?)
Europe: 4PM
UK: 3PM
North America (ET): 10AM
North America (PT): 7AM
Japan: 12AM (February 27th)
Australia: 2AM (AEDT)
Links
Europe: official website / Twitch
North America: official website / Twitch / YouTube
Japan: official website / NicoNico / YouTube
Australia: official website
Hong Kong: Nintendo website (no livestream?)