Question 1

How many days does September 1920 have?

Accepted Answer

September 1920 has 30 days. It starts on Wednesday and ends on Thursday.

Question 2

What ISO week does September 1920 start in?

Accepted Answer

1 September 1920 falls in ISO week 36. Weeks run Monday–Sunday per ISO 8601.

Question 3

Where can I see the public holidays of Mongolia in September 1920?

Accepted Answer

The calendar on this page marks every national public holiday of Mongolia in September 1920 in red, with joint/regional days in amber.