Release Schedule Planner
Plan recurring release dates with testing and review gates. Apply a working calendar and identify collisions with entered freeze periods.
Starts with an editable example. Replace the dates and rules with your own.
Your calculation
Ready when you are
Choose your dates.
Select your counting rules and calculate.
Calculation details
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How to use this calculator
Set the first release, cadence and count. Enter separate working-day leads for testing and review, a non-workday adjustment and any inclusive freeze periods.
Each planned release stays anchored to the original cadence. Gates count backwards from its adjusted date. Freeze collisions are reported instead of silently moving gates. Zero lead places a gate on the release date.
A worked example
A November 6, 2026 release with five working days of testing lead and two days of review lead has gates on October 30 and November 4, without closures.
Does changing one adjusted date move every later release?
No. The original first release and week interval anchor the sequence. Duplicate adjusted release dates are rejected so you can revise the rule.
Which calendar and years are supported?
Use Gregorian dates from 1900 through 2100, with results in that range. Daily attendance, office, coverage and chore plans allow up to 366 dates; school cycles, course plans and milestones allow up to 731. Dependency and historical workday calculations scan at most 3,661 dates. Class-session searches allow 366 dates and 200 sessions. Time-zone tools use browser IANA rules and require a choice when local times repeat. Dates and policy rules are entered manually; no employer, retailer, school or local weather policy is inferred. Copy, CSV and printing include the calculation rules; calendar exports appear when the result contains dated events.
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.