This year, December has 5 Saturdays, 5 Sundays and 5 Mondays.

This year, December has 5 Saturdays, 5 Sundays and 5 Mondays.

Dec-12
Mon	Tue	Wed	Thu	Fri	Sat	Sun
31	�	�	�	�	1	2
3	4	5	6	7	8	9
10	11	12	13	14	15	16
17	18	19	20	21	22	23
24	25	26	27	28	29	30

This only happens once every 824 years.