Moonlight Treasure Box:
Day of the Week: Monday, Tuesday, Wednesday or Thursday
About: While Moonlight box is activated, every mob has a little chance to drop them.
Duration: 24 hours
Note: Moonlight days on calendar will be updated every 4 weeks, with the
following days of the 4 next weeks. So calendar won't show a moonlight
day from 5 weeks and beyond from the last update.