Upcoming maintenance for Wii U / 3DS, using eShop cards

Nintendo has scheduled more maintenance for both Wii U and 3DS as well as maintenance specifically pertaining to the use of eShop cards. As far as the schedule goes, both are as follows:

Wii U / 3DS maintenance (online play, rankings, etc.)

– 4 PM PT (January 30) – 8 PM PT (January 30)
– 7 PM ET (January 30) – 11 PM ET (January 30)
– 12 AM in the UK (January 31) – 4 AM in the UK (January 31)
– 1 AM in Europe (January 31) – 5 AM in Europe (January 31)

Using eShop cards

– 10 AM PT (February 7) – 1 PM PT (February 7)
– 1 PM ET (February 7) – 4 PM ET (February 7)
– 6 PM in the UK (February 7) – 9 PM in Europe (February 7)
– 7 PM in Europe (February 7) – 10 PM in Europe (February 7)

Source