Week 9's Love-Hate List Is HERE! Brace Yourself... - World News Update
Week number according to the iso-8601 standard, weeks starting on monday. The first week of the year is the week that contains that year's first thursday (='first 4-day week'). There are just over 52 weeks in a year.
Ancient cultures had different. Sunday is the first day of week and saturday if the last day of the week. The first week of the year is the week that contains january 4th, first 4 days of the year.
