CU-TOOL-010 / Contracts & Claims / Beta
Notice Deadline Calculator
Model a notice deadline and compare it with an assessment date or the date actually issued.
Version 0.1.1 · Last reviewed
Calculations run in your browser. Inputs are not uploaded or saved; refreshing clears them.
01 / YOUR INPUTS
02 / MATHEMATICAL RESULT
Your result will appear here.
Enter your inputs and calculate. Changing a value clears the previous result so it cannot be mistaken for an updated calculation.
Calculation methodology
- Days: use the entered whole-day period. Weeks: multiply by seven for calendar days or five for Monday–Friday working days.
- Exclude the event date and advance by the specified count. Working-day mode skips Saturdays and Sundays only.
- Remaining / late days = deadline − assessment date, in calendar days. If a notice was issued, compare against its issue date instead.
- An issue date on or before the modelled deadline is within the modelled period. This says nothing about valid service or contractual compliance.
Assumptions
- The event date is the user-supplied trigger proxy; confirm the actual contractual trigger.
- The trigger day is excluded. A zero period returns the trigger date, including at weekends.
- Working days (Mon–Fri only). Public holidays and non-working dates in project calendars are NOT excluded.
- No end-of-day cut-off, receipt/service rule or extension of a calendar deadline falling on a weekend is applied.
- Assessment date defaults to the device's local date and can be changed. Day differences are calculated in UTC to avoid daylight-saving drift.
Worked example
Inputs: Event Friday 11 September 2026; period 1 day; assessment 11 September; not yet issued.
Result: Calendar basis: Saturday 12 September, one calendar day remaining. Mon–Fri basis: Monday 14 September, three calendar days remaining.
Contractual interpretation
Questions about this tool
Are local public holidays excluded?
No. Working-day mode excludes Saturdays and Sundays only. Check the contract and relevant holiday calendar separately.
Why can remaining days differ from the notice period?
The notice period may use working days, but the remaining/late display always measures calendar days against the labelled reference date.