Question 1

How many days does September 2021 have?

Accepted Answer

September 2021 has 30 days. It starts on Wednesday and ends on Thursday.

Question 2

What ISO week does September 2021 start in?

Accepted Answer

1 September 2021 falls in ISO week 35. Weeks run Monday–Sunday per ISO 8601.

Question 3

Where can I see the public holidays of Ireland in September 2021?

Accepted Answer

The calendar on this page marks every national public holiday of Ireland in September 2021 in red, with joint/regional days in amber.