Civil procedure deadline
Part 36 relevant period calculator
A Part 36 offer must usually specify a relevant period of at least 21 days. Enter the service date to calculate the end of the minimum period.
Rule reviewed
At a glance
What the calculator applies
- Period
- At least 21 days
- Trigger
- Service of the Part 36 offer
- Direction
- Forward from service
- Counting method
- 21 clear days; the service day is excluded
Free calculation
Calculate from the relevant date
The jurisdiction, forum and triggering event are preset for this deadline. Enter the date and any facts the calculator asks for.
Search by the deadline you know, or choose the relevant court or tribunal.
Search selects the right court or tribunal. You will choose the exact deadline below.
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Work backwards from a deadline
Pick a target date and find the latest trigger date that still meets it.
Calculation basis
How the date is counted
21 clear days; the service day is excluded
All calendar days count because the period exceeds five days. A deadline ending on a court closure day moves under CPR 2.8(5).
Check before use
Exceptions and matter facts
- An offer made less than 21 days before trial is subject to CPR 36.5(2).
- The offer itself may specify a longer period, which controls instead of the minimum.
Check this result before using it
Deadline Engine is calculation software, not legal advice. Check the current rule, any order and the facts before adding the date to your diary.
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