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Formula similar to WORKDAY but working backward from a due date

Topic Labels: Dates & Timezones Formulas
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Branden
5 - Automation Enthusiast
5 - Automation Enthusiast

I receive a due date and have to calculate backward to identify different milestones in our projects. What formula(s) do I need to use to make this work? I've attached a picture of what I'm trying to do. 

 

Thanks in advance for the help!

1 Reply 1

You're gonna need to make a field for each of these milestones. Then subtract the days based on the final date, "Completion", which I assume is the due date.

An example would be to make a formula field, "Production Fee Due" with this formula:

DATEADD({Completion}, -1, 'days')
The "Start Date" field would have:
DATEADD({Completion}, -42, 'days')
If your due date is in the middle, you can add days on future dates by removing the "-" in front of the number.
 
Additionally, if you want the number of days to be variable, you'll have to create a number field for each milestone. Your formula would look like this instead:
DATEADD({Completion}, -{Production Fee Days}, 'days')
 
 
Let me know if this is what you're looking for 🙂