Nintendo has updated its maintenance schedule for the week of December 17, 2023. Only one session is currently lined up for Switch.
Here’s the full maintenance schedule for the week of December 17, 2023:
Switch network services – Nintendo Switch Online on the Home Menu
– 9 PM PT (December 20) – 10 PM PT (December 20)
– 12 AM ET (December 21) – 1 AM ET (December 21)
– 5 AM in the UK (December 21) – 6 AM in the UK (December 21)
– 6 AM in Europe (December 21) – 7 AM in Europe (December 21)
Source