BusinessHours Add Function returns incorrect results for 24 hours time window.
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Known Issues · Fixed

BusinessHours Add Function returns incorrect results for 24 hours time window.

Last updated 2022-02-10 ·Reference W-1617948 ·Reported By 3 users

Fixed - Spring '14

Summary
BusinessHours.addGMT() function returning incorrect results when business hour are set to 24 hrs in the following scenario.
Scenario 1- "SUBTRACTING" days from a particular given date, it is not skipping the non business hours ( Saturday and Sunday )
Scenario 2- "ADDING" days to a particular given date, when date is set as midnight eg,Datetime.newInstance(2013, 3, 27, 0 , 0, 0), it is not skipping the non business hours ( Saturday and Sunday )

Repro
Setup
- set of business hours defined with no Business hours on Sunday and Saturday .
- The rest of the days have a 24 hour schedule.

Steps to replicate
- Run the following code in developer console
Scenario 1-
Apex Code-
BusinessHours stdBusinessHours = [select id from businesshours WHERE IsDefault=true];
if ((stdBusinessHours != NULL)) {
DateTime dt = Datetime.newInstance(2013, 3, 27, 0 , 1, 0);
System.debug(dt);
System.debug('****After adding 3 Business days ****' +BusinessHours.addGMT (stdBusinessHours.id, dt, 3 * 24 * 60 * 60 * 1000L).format());
System.debug('*****After Subtracting 3 Business days****'+BusinessHours.addGMT (stdBusinessHours.id, dt, -3 * 24 * 60 * 60 * 1000L).format());
}
Results-
Start Date - dt - 2013-03-27 07:01:00 (Wednesday)
|****After adding 3 Business days ****4/1/2013 12:01 AM ( Monday ) - Business Hour . This is the expected behavior
|*****After Subtracting 3 Business days****3/23/2013 12:01 AM (Saturday) - Non Business Hour . This is the incorrect behavior

Scenario 2-
Apex Code-
BusinessHours stdBusinessHours = [select id from businesshours WHERE IsDefault=true];
if ((stdBusinessHours != NULL)) {
DateTime dt = Datetime.newInstance(2013, 3, 27, 0 , 0, 0);
System.debug(dt);
System.debug('****After adding 3 Business days ****' +BusinessHours.addGMT (stdBusinessHours.id, dt, 3 * 24 * 60 * 60 * 1000L).format());
System.debug('*****After Subtracting 3 Business days****'+BusinessHours.addGMT (stdBusinessHours.id, dt, -3 * 24 * 60 * 60 * 1000L).format());
}
Results-
Start Date - dt - 2013-03-27 07:01:00 (Wednesday)
|****After adding 3 Business days ********3/30/2013 12:00 AM (Saturday) - Non Business Hour . This is the incorrect behavior
|*****After Subtracting 3 Business days****3/23/2013 12:01 AM (Saturday) - Non Business Hour . This is the incorrect behavior

Workaround
Use a non 24 hours business hours

Reported By (3)

Bharti Hathalia Josh Van Kley Josh Van Heukelom

Is it Fixed?

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