Nintendo 3DS/Wii U - maintenances planned for January 22/23

Services impacted
Wii U: online play (all games)
Nintendo 3DS: online play (all games)

Times
Europe: January 23rd (2AM to 4AM)
UK: January 23rd (1AM to 3AM)
North America (EST): January 22nd (8PM to 10PM)
North America (PST): January 22nd (5PM to 7PM)
Japan: January 23rd (10AM to 12PM)'

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Services impacted
Wii U: Image Share (all online services)
Nintendo 3DS: Image Share (all online services)

Times
Europe: January 23rd (6AM to 7AM)
UK: January 23rd (5AM to 6AM)
North America (EST): January 23rd (12AM to 1AM)
North America (PST): January 22nd (9PM to 10PM)
Japan: January 23rd (2PM to 3PM)

from GoNintendo