Subtract business hours from timestamp
I have a time stamp field called "Deadline" and I want to subtract business hours from it (weekday hours.) How? ToWeekdayP([Deadline]-Hours(#)) This doesn't work, it just knocks the result to a Fr...
Forum Discussion
I had to do something similar (calculate using working hours and not just regular hours). The way I did this was by creating a very complex set of variables and if statements that increased the hours to subtract depending on how to take into account the non-working hours. In my case this was in a single day so I only had to take into account an 8 hour work day. But you could do something similar using "DayofWeek" for your problem. It's brute force, but it works.
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Andrew Patricio
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Andrew Patricio
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I thought that might be the answer. I often feel like I'm making things more complex than they have to be, "WeekdayAdd" works so well on dates that I hoped there was an easier answer.
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Jen Hamilton
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Jen Hamilton
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- Jen,
Assuming:
- that you never exceed one weekend
- Deadlines are on the whole hour
- The amount of time you are going backwards is whole hours
Try this:
// Convert User Numeric Input to Duration in Hours
var duration SubHours =Hours([Hours]);
// Calculate Day of the Week from the Deadline Sunday = Day Zero, Saturday = Day Six
var number DeadlineDay =DayOfWeek(ToDate([Deadline]));
// Calculate the numerical Hour of the Day from the Deadline
var number DeadlineHour = Hour(ToTimeOfDay([Deadline]));
// Calculate Hours from Sunday
var duration DeltaSunday = Hours($DeadlineDay-1)*24+ Hours($DeadlineHour);
// If the hours to subtract is greater than the Delta to Sunday, subtract an extra 48 hours
var datetime Early= If( $DeltaSunday>$SubHours, [Deadline]-$SubHours, [Deadline]-$SubHours- Hours(48));
// Display the early date time stamp to the User
$Early
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Don Larson
Paasporter
Westlake OH
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