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weeks(startDate, endDate)

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 Function  [other Function type actions]

 Item  [operators of similar scope]

 Date-time  [other Date-time operators]


 As at baseline

weeks(startDate, endDate)

This returns the Number of (7-day weeks) weeks between two dates, startDate and endDate. If the dates are within seven days of each other, the result is zero.

If $DateA is 3 January 2016 and $DateB is 20 January 2016, then:

$MyNumber = weeks($DateA,$DateB); 

sets $MyNumber to 2.

If endDate is before startDate the result is negative.