Daily shrine XP caps are 10% of your level's total XP.
But I've found that you actually donate more than that before the shrine tells you to stop because of your daily XP limit. For example, in the last game day, I donated a cumulative total of 23k XP before the shrine said to stop donating because I was about to hit my limit of 20k XP. The two numbers did not match, but I think I got credit for all 23k that was the sum of XP granted in local chat after each donation. I reported this as a bug and will add a follow up after this game day. nbd
Does Stoot ever leave the office? Night or day, 7 days a week, he is here leaving comments. Maybe this crazy world of Ur is really just one of his dreams.