Holidays Between Two Given Dates

Given two dates, this formula calculates the number of saturdays and sundays
between them.
StartingSaturDay:=@If(
@Weekday(StartDate) < 7; @Adjust(StartDate;0;0;(7-@Weekday(StartDate));0;0;0);
StartDate);

StartingSunday:=@If(
@Weekday(StartDate) > 1;@Adjust(StartDate;0;0;(8-@Weekday(StartDate));0;0;0);
StartDate);

EndingSaturDay:=@If(
@Weekday(EndDate) < 7;@Adjust(EndDate;0;0;-(@Weekday(EndDate));0;0;0);
EndDate);

EndingSunday:=@If(
@Weekday(EndDate) > 1;@Adjust(EndDate;0;0;-(@Weekday(EndDate) - 1);0;0;0);
EndDate);

TotCount:=((((EndingSaturDay - StartingSaturDay)/86400)/7) + 1) +
((((EndingSunday - StartingSunday)/86400)/7) + 1);
@Prompt([OK];"Holidays";@Text(TotCount));

This was first published in November 2000

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