I have a question regarding magic items and reuse. My particular question pertains to 3.xE but it may be more general.
Several listed magic items have a reuse time of once a week, but Faerun uses a 10-day division. How does this effect these magic items, or does it? Folk in Faerûn use tendays, and don't know what a "week" means. But the game designers writing game rulebooks are writing them for us real-world readers, who do. So by a week they DO mean 7 days (7 full days, or 168 hours) between uses. (Try early = nothing happens.)#Realmslore

— Ed Greenwood (@TheEdVerse) May 19, 2020