WEEKNUM

ISOWEEKNUM calculates the week number of the year for the internal date value.

แƒจแƒ”แƒœแƒ˜แƒจแƒ•แƒœแƒ˜แƒก แƒฎแƒแƒขแƒฃแƒšแƒ

The International Standard ISO 8601 has decreed that Monday shall be the first day of the week. A week that lies partly in one year and partly in another is assigned a number in the year in which most of its days lie. That means that week number 1 of any year is the week that contains the January 4th.


แƒกแƒ˜แƒœแƒขแƒแƒฅแƒกแƒ˜

ISOWEEKNUM(Number)

แƒ แƒ˜แƒชแƒฎแƒ•แƒ˜ แƒแƒ แƒ˜แƒก แƒ—แƒแƒ แƒ˜แƒฆแƒ˜แƒก แƒจแƒ˜แƒ“แƒ แƒ แƒ˜แƒชแƒฎแƒ•แƒ˜.

แƒ›แƒแƒ’แƒแƒšแƒ˜แƒ—แƒ”แƒ‘แƒ˜

=ISOWEEKNUM(DATE(1995;1;1)) returns 52. Week 1 starts on Monday, 1995-01-02.

=ISOWEEKNUM(DATE(1999;1;1)) returns 53. Week 1 starts on Monday, 1999-01-04.