Spread Formula Reference
WEEKNUM
Formula Functions > Functions T to Z > WEEKNUM

This function returns a number that indicates the week of the year numerically.

Syntax

WEEKNUM(date,weektype)

Arguments

This function has these arguments:

Argument Description  
date Date for which you want to determine the number of week  
weektype Type of week determined by on which day the week starts  
  Value Number returned
  1 (assumed if omitted) Week starts on a Sunday
  2 Week starts on a Monday

Specify the date argument as a number (as in 37806.5) a string (as in "7/4/2003 12:00"), or a DateTime object, as in DATE(2003,7,4). For more details on the date inputs, refer to the discussion in Date and Time Functions.

Data Types

Accepts numeric, string, DateTime object, or TimeSpan object data. Returns numeric data.

Examples

WEEKNUM(A2)

WEEKNUM(R2C1,2)

WEEKNUM(23,1) gives the result 4

Version Available

This function is available in product version 1.0 or later.

See Also

MONTH | WEEKDAY | Date and Time Functions