Question 1

How many days does September 2013 have?

Accepted Answer

September 2013 has 30 days. It starts on Sunday and ends on Monday.

Question 2

What ISO week does September 2013 start in?

Accepted Answer

1 September 2013 falls in ISO week 35. Weeks run Monday–Sunday per ISO 8601.

Question 3

Where can I see the public holidays of Indonesia in September 2013?

Accepted Answer

The calendar on this page marks every national public holiday of Indonesia in September 2013 in red, with joint/regional days in amber.