Gallery-specific Sales Using Same Price List

Is it possible to assign the same price list to multiple galleries, but have sales start and stop at different times for each gallery?

I don't understand the question. 

Yes you can assign the same price list to multiple galleries. 

You can set expiration dates to galleries. 

Each gallery has the option to change the price list after a certain date.

I sell Team/Individual photos for all the sports and teams at my schools, so i have a price list for general T&I (2025-2026).  Not all sports get shot at the same time though.  For instance, we're doing middle school this week, but won't do varsity until maybe 3 weeks from now.   They would use the same price list, and the incentive for parents to pre-order is a 25% discount (sale).  But I only want the sale to be valid for a week after each team takes their photos.  

Is their a way to use the same price list with a sale applied, but have the sale run different dates for different galleries?  Hopefully that explains it.  Or do I have to create a price list for each team/sport?

Sounds like using the Early Bird special option in the galleries would be best. 

Early Bird Special.

Not an option to set the sale in price lists per gallery.