Total days

[Byeomans]

There may already be a way, but I’d love to be able to keep track of days skied over the winter. 

[Bryant]

Hey @Byeomans,

If you don't mind, could you expand on what you mean by "keep track of days skied over the winter".
I may be able to point you in the right direction.

[ActivityFix]

I'm pretty sure they are asking to track/count the number of days a ski activity was recorded during winter. So not reset on a calendar year but instead at the end of a "season" (e.g. October-May/June for northern hemisphere).

To my knowledge Strava doesn't have such a feature but some apps that connect with Strava do.