Parenting Time and Overnight Count
Count parenting hours, reporting-period shares and overnights from entered care intervals. Apply overrides and expose unassigned time.
Starts with an editable example. Replace the dates and rules with your own.
Your calculation
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Select your counting rules and calculate.
Calculation details
| Step | Value |
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How to use this calculator
Enter a reporting start/end, care intervals for Parent A or B and an overnight counting clock time. Add optional overrides, choose the time zone and resolve repeated times explicitly.
Ends are exclusive. Shares use the whole reporting interval including unassigned time. Overrides replace base care. An overnight belongs to whoever has care at the selected daily cutoff instant; elapsed hours account for daylight saving.
A worked example
From November 2 at 09:00 through November 5 at 09:00, 2026, Parent A's first 48 hours are 66.6667% of the 72-hour report. At a 03:00 cutoff, A has two overnights and B one.
Are these statutory overnight or custody percentages?
No. They follow the counting convention you selected and do not determine legal custody, support or entitlement. Actual and planned intervals should be reported in separate setups.
Which calendar and years are supported?
Use Gregorian dates from 1900 through 2100, with results in that range. Most daily plans allow up to 366 dates; service-budget searches allow 731. Timed intervals have exclusive ends and use browser IANA time-zone rules; nonexistent local times are rejected and repeated times require your choice. Working calendars and policy terms are entered by you. The holiday comparison uses TimeCubby's published country/region coverage. Copy, CSV and print include assumptions; calendar exports appear when dated events exist.
What happens to my dates?
Calculations run on your device. Saving a calculation is optional and keeps it in this browser. A setup link contains the dates and settings you entered; anyone with the link can read them. Use one tab per saved calculator. Clear saved data from Privacy & settings.