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Parenting Time Overnight and Percentage Calculator

Choose a repeating schedule, calculate a full year or custom date range, add holiday overrides, and download the monthly results.

Reviewed August 12, 2026

This calculator counts assigned overnights or known totals. It does not apply a jurisdiction's legal definition, determine child support, or verify that every schedule exception has been entered.

The percentage stays the same. The report also shows total child-nights.

Weekday presets use the Monday of this week as their anchor.

Assign a specific overnight differently from the repeating schedule.

Updated estimate: Parent A 49.9 percent, Parent B 50.1 percent, with 156 handoffs.

Calculated period: Jan 1, 2026 to Dec 31, 2026 · 365 nights · 0 overrides

Parent A

49.9%

182 overnights

Parent B

50.1%

183 overnights

Child-nights

365

1 child

Monthly overnight breakdown

MonthParent AParent B
January 20261615
February 20261414
March 20261516
April 20261614
May 20261417
June 20261614
July 20261516
August 20261615
September 20261515
October 20261516
November 20261515
December 20261516

Estimated handoffs

156

Longest block with Parent A

3 nights

Longest block with Parent B

3 nights

How it works

From a schedule or overnight total to a percentage

Use the schedule method to apply a rotation to every night in a calendar year or custom date range. Dated overrides replace the repeating assignment for holidays, vacations, or one-off changes. If the final overnight totals are already known, manual mode calculates the percentage directly.

The monthly table, handoff count, and longest blocks are available when dates are generated from a schedule. The downloadable report records the selected period, method, totals, percentages, and monthly figures where available.

A court order or child-support worksheet may count time differently. Review the applicable rule before using the result for a legal or financial purpose.

Need to see the dates themselves? Build the same rotation in the custody schedule generator. For common patterns, see how to choose a custody schedule.

FAQ

Questions, answered

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