Jubilee Celebrations of Queen Mifeath of Polantia

The week-long celebrations, celebrating the reign of Mifeath, Queen of Polantia. Beginning 5 years into her reign, the year 2e730, the tradition has over time come to celebrate every 50 years of Mifeaths reign.
The next Jubliee celebration will be held in the year 4e170, and then 50 years after that, and 50 after that, and so on until the end of her reign, whenever that may be.