Happy Popsadom!

In case you have never heard of Popsadom, you should know that it has become, in the last two days, an extremely important holiday in our house. I have not been able to discern the exact details of the how and why of the holiday, but it seems mostly to entail wishing each other "Happy Popsadom" repeatedly and enthusiastically. Anyone know how long Popsadom traditionally lasts?

Breaking news about Popsadom:
Apparently, another one of the ways you celebrate Popsadom is to have a green rose cake. I have it on good authority that it's really tasty.