Week
Week numbering

Week

Section Title: Week numbering
Table Section Text: None

System	First day of week	First week of year contains	Can be last week of previous year	Used by or in

ISO-8601	Monday	4 January	1st Thursday	4–7 days of year	yes	EU and most of other European countries, most of Asia and Oceania

(Middle Eastern)	Saturday	1 January	1st Friday	1–7 days of year	yes	Much of the Middle East

(North American and Islamic)	Sunday	1 January	1st Saturday	1–7 days of year	yes	Canada, United States, India, Japan, Taiwan, Thailand, Hong Kong, Macau, Israel, Egypt, South Africa, the Philippines, and most of Latin America

Sentence(s)

ISO 8601, a numbering system for weeks – each week begins on a Monday.
ISO 8601, a numbering system for weeks – each week begins on a Monday
ISO 8601 includes a numbering system for weeks – week begins on a Monday.

final_sentence: ISO 8601, a numbering system for weeks – each week begins on a Monday.
final_sentence: ISO 8601, a numbering system for weeks – each week begins on a Monday
final_sentence: ISO 8601 includes a numbering system for weeks – week begins on a Monday.