How many holidays/feasts end in -mas?

There are many holidays/feasts that end in -mas, like: 1. [Christmas](https://en.wikipedia.org/wiki/Christmas) 2. [Marymas](https://en.wikipedia.org/wiki/Nativity_of_Mary#cite_note-A-2) 3. [Michaelmas](https://en.wikipedia.org/wiki/Michaelmas) 4. [Roodmas](https://en.wikipedia.org/wiki/Roodmas) 5. [Candlemas](https://en.wikipedia.org/wiki/Candlemas) How many other -mas's are there?