What is the Day of the Week? Jan 2024

This method, as shown, is applicable and very easy for dates in the 1900s and the 2000s.

If a date is early in the 1900s, or late in the 2000s then an alternate starting point can be used. The following can be substituted for 2024:

2024 – (4 x 28)	1912
2024 – (3 x 28)	1940
2024 – (2 x 28)	1968
2024 – (1 x 28)	1996
2024 + (1 x 28)	2052
2024 + (2 x 28)	2080
2024 + (3 x 28)	2108

Unfortunately, I cannot remember where I found this specific method (using 2024 as a basis). If anyone knows the source of this specific method, please let me know. Thanks.