[Tagging] Is there some established tag for free days at museums (and other object)?

[marc marc]

Le 08. 02. 18 à 16:01, Mateusz Konieczny a écrit :
> Is there some established way to tag things such as
> 
> - museums fees are waived on Tuesdays

https://taginfo.openstreetmap.org/keys/fee%3Aconditional