Popmundo has many global holidays. To access these holidays in game you can go to city and then calendar under city details. This in game calendar will list the holidays according to real life dates, based in your character's current time zone. A Popmundo year lasts real life 56 days. Here you will find a list of in game holidays by the day they occur on the Popmundo year. Monolith Day is not listed on the in game calendar.