Nintendo Switch/3DS/Wii U - upcoming maintenance sessions for July 6-12

Services impacted
Nintendo Switch: online play, leaderboards (unspecified games)
Wii U: online play, leaderboards (unspecified games)
Nintendo 3DS: online play, leaderboards (unspecified games)

Times
Europe: July 7th (2AM to 5AM)
UK: July 7th (1AM to 4AM)
North America (EST): July 6th (8PM to 11PM)
North America (PST): July 6th (5PM to 8PM)
Japan: July 7th (9AM to 12PM)

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Services impacted
Nintendo Switch: all online services

Times
Europe: July 10th (10PM) to July 11th (4AM)
UK: July 10th (9PM) to July 11th (3AM)
North America (EST): July 10th (4PM to 10PM)
North America (PST): July 10th (3PM to 7PM)
Japan: July 11th (5AM to 11AM)

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Services impacted
Nintendo Switch: online play, leaderboards (unspecified games)
Wii U: online play, leaderboards (unspecified games)
Nintendo 3DS: online play, leaderboards (unspecified games)

Times
Europe: July 11th (2AM to 5AM)
UK: July 11th (1AM to 4AM)
North America (EST): July 10th (8PM to 11PM)
North America (PST): July 10th (5PM to 8PM)
Japan: July 11th (9AM to 12PM)

***

Services impacted
Wii U: Super Mario Maker (all online services)
Nintendo 3DS: Super Mario Maker (all online services)

Times
Europe: July 12th (2.15AM to 5AM)
UK: July 12th (1.15AM to 4AM)
North America (EST): July 11th (8.15PM to 11PM)
North America (PST): July 11th (5.15PM to 8PM)
Japan: July 12th (9.15AM to 12PM)

from GoNintendo