369

Recipe: To know the day of the week of the other months of that year

Put the 369 ruler of this month to today.

If today is May 31, 2019, the Wek mark is on 'F'.

This means a June 2019 Wek mark is on 'E♭', then June 30, 2019 is Saturday, for example.

just step (a day) or leap (two days) the 369 ruler in in‐direction.