Durin's Day

[Estelyn Telcontar]

I dug out Foster's Guide (well, actually I have it handy on the bookshelf right next to my computer) and found this definition:

The first day of the Dwarvish year, so called only if the moon and the sun shone in the sky at the same time. The Dwarves' New Year was the first day of the last new crescent moon of Autumn.

As I understand that, New Year would be every year, of course, but it would rarely be Durin's Day as well. The whole system for determining the Dwarves' New Year is similar to the Christian church's Easter holiday, which also changes its date, dependant on the first new moon of spring.