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Determine how many Sundays are in date range

Determine how many Sundays are in date range

Determine how many Sundays are in date range

(OP)

I have written a Newspaper Carrier program that only delivers on Monday-Saturday. I need to know how to determine how many Sundays are within a certain date range and then subtract them from the total days calculated so I will come up with the correct days to bill for.
I have the following code:

CODE -->

IF PIA:PrepaidFor = '1 Month'
  PayMonth = Month(PIA:ReceivedFrom)
  IF PayMonth = 1 OR PayMonth = 3 OR PayMonth = 5 OR PayMonth = 7 OR PayMonth = 8 OR PayMonth = 10  OR PayMonth = 12
    PIA:ReceivedTo = PIA:ReceivedFrom + 31
  ELSIF PayMonth = 4 OR PayMonth = 6 OR PayMonth = 9 OR PayMonth = 11
    PIA:ReceivedTo = PIA:ReceivedFrom + 30
  ELSE
    PIA:ReceivedTo = PIA:ReceivedFrom + 28
  END
END 
This works good as long as there are only 4 Sundays between PIA:ReceivedFrom and the results of PIA:ReceivedTo
Example:
If PIA:ReceivedFrom = 07/08/2015
PIA:ReceivedTo = 08/08/2015 with only 4 Sundays in between. This is the correct answer.

But if PIA:ReceivedFrom = 07/10/2015
PIA:ReceivedTo = 08/09/2015 but should be 08/10/2015 because there are 5 Sundays in between.
How do I determine there are 5 Sundays so I can add an extra day to PIA:ReceivedTo.

RE: Determine how many Sundays are in date range

Hi,

you can try this way:

CODE -->

SUN# = 0
    LOOP i# = DEFORMAT('10.07.2015',@d17) TO DEFORMAT('10.08.2015',@d17)
      IF i# % 7 = 0 THEN
        SUN# += 1
      END
    END
    message(SUN#) 

cagiv

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