Difference between revisions of "Documentation/How Tos/Calc: WEEKNUM function"

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: <tt>'''mode'''</tt> specifies which day is considered the first day of the week: <tt>'''1'''</tt> for Sunday, <tt>'''2'''</tt> for Monday
 
: <tt>'''mode'''</tt> specifies which day is considered the first day of the week: <tt>'''1'''</tt> for Sunday, <tt>'''2'''</tt> for Monday
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: To mimic the non-ISO behaviour of the Excel <tt>'''WEEKNUM'''</tt> function, use <tt>'''[[Documentation/How_Tos/Calc: WEEKNUM_ADD function|WEEKNUM_ADD]]'''</tt>.
  
 
=== Example: ===
 
=== Example: ===
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=== Issues: ===
 
=== Issues: ===
*To mimic the non-ISO behaviour of the Excel <tt>'''WEEKNUM'''</tt> function, use <tt>'''[[Documentation/How_Tos/Calc: WEEKNUM_ADD function|WEEKNUM_ADD]]'''</tt>.
 
 
 
*<tt>'''WEEKNUM'''</tt> is called <tt>'''ISOWEEKNUM'''</tt> in the forthcoming ODFF standard.
 
*<tt>'''WEEKNUM'''</tt> is called <tt>'''ISOWEEKNUM'''</tt> in the forthcoming ODFF standard.

Revision as of 09:04, 18 January 2008


WEEKNUM

Returns the ISO week number of a given date.

Syntax:

WEEKNUM(date; mode)

returns the international standard ISO8601 week number, where week 1 is the week that contains January 4th.
date is the date as a date-time serial number or as text.
mode specifies which day is considered the first day of the week: 1 for Sunday, 2 for Monday
To mimic the non-ISO behaviour of the Excel WEEKNUM function, use WEEKNUM_ADD.

Example:

WEEKNUM("2010/01/07"; 2)

returns 1. 7Jan10 is a Thursday, and 4Jan10 the Monday of that week.

See also:

WEEKNUM_ADD

Date & Time functions

Date & Time overview

Issues:

  • WEEKNUM is called ISOWEEKNUM in the forthcoming ODFF standard.
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