LOAD_HOLIDAYS Procedure

Makes the value of the !Holiday_List system variable available to the date/time routines.

NOTE: If all weekdays have been defined as weekend days, an error results.

Example

This example shows how you might directly modify the system variable !Holiday_List and then run LOAD_HOLIDAYS to make the change available. Assume that December 26 has been erroneously defined as a holiday and that it is the first date/time structure in !Holiday_List. To change this holiday to December 25:

!holiday_list(0).DAY = byte(25)

; Manually change the Day field of the first date/time structure in
; !Holiday_List to the 25th. The Day field of this structure contains a
; byte value.

CAUTION: Whenever you directly modify the date in a !DT structure, set the Recalc field (the last field in the !DT structure) to 1. This causes the Julian date to be recalculated. If the Julian date is not recalculated, plots or date/time calculations that use the modified variable may be inaccurate.

!holiday_list(0).RECALC = byte(1)

; Manually set the Recalc field of the structure to 1. This field 
; contains a byte value.

LOAD_HOLIDAYS

; Run LOAD_HOLIDAYS so the new holiday value will take effect.

LOAD_HOLIDAYS Procedure

Usage

Parameters

Keywords

Discussion

Example

See Also