Day of week in Ruby

Ruby
1

Hi I’m wondering how can you determine the day of the week of a date
based on month, day, or year? Without using the Date class because I am
trying to do a little program without it. I do have some numbers
constants at the top of my file. For example
SUNDAY = 0
MONDAY = 1
…
WEDNESDAY = 3
etc…

Any ideas would be helpful.

Thanks.

2

Emar Fay wrote in post #1162289:

Hi I’m wondering how can you determine the day of the week of a date
based on month, day, or year? Without using the Date class because I am
trying to do a little program without it.

So, in other words, you try to re-program the calendar that is available
via the Date-class.

You need to make the same concessions as the inventors of any such thing
(calendar) and determine a starting point. From then on, and given that
the leap year problem had been solved before, you need the numbers
between 1 and 7 to calculate a day. Addition and subtraction come handy.