Posted by Anthony Hall on
URL: http://oldforum.flyshooter.com.au/2016-calendar-tp5708229p5708303.html

Put more simply the 8th was the second sunday last year, this year the second sunday is the 14th....

It will on average change by 1 day each year, then every 6 years it will reset by 6 days (not allowing for leap years).

Cheers