wekan/docs/Platforms/FOSS/Snap/Automatic-update-schedule.md

a) Install all Snap updates automatically between 02:00AM and 04:00AM

snap set core refresh.schedule=02:00-04:00

b) Update once a week at Sunday between 02:00AM and 04:00AM

snap set core refresh.schedule=sun,02:00-04:00

c) Update last Sunday of the month between 02:00AM and 04:00AM

snap set core refresh.schedule=sun5,02:00-04:00

Update until specific day and other examples.

If required, you can disable all Snap updates

at /etc/hosts by adding a line:

127.0.0.1 api.snapcraft.io

No schedule set

Automatic upgrades happen sometime after Wekan is released, usually quite soon.

Manual update immediately

sudo snap refresh