Month calendar day sequence convention

1. Should I start my calendar on Sunday or Monday?
2. What day should a calendar start on?
3. How do we know what day of the week it is?
4. What is the first day of the week?

Should I start my calendar on Sunday or Monday?

Which day do you consider the beginning of the week? According to the International Organisation for Standardisation, Monday signifies the beginning of the trade and business week. Although culturally and historically, Sunday signifies the starts of a new week and is a day of rest.

What day should a calendar start on?

The Gregorian calendar, currently used in most countries, is derived from the Hebrew calendar, where Sunday is considered the beginning of the week.

How do we know what day of the week it is?

Take the last two digits of the year. Add to that one–quarter of those two digits (discard any remainder). Divide the sum by 7. The remainder is the day of the week!

What is the first day of the week?

According to the international standard ISO 8601, Monday is considered the first day of the week.