Inspect the selected night-window rule
The supported choices declare specific source variants, including distinct night-window rules. Keep the choice visible when comparing a festival calendar from another tradition.
Review the full window and candidates
Read the returned local and UTC anchors, lunar overlaps and selection explanation. A date candidate is distinct from an instruction about an exact ritual time.
Keep a reproducible reference
A confirmed signed-in save retains the selected settings and returned report in your account. Reopen it from saved reports to review the same inputs and method; changing the form later does not rewrite an existing report.
How to use this calculator
- Complete the inputs shown for this specific method. Use a saved family profile where relevant; a birth time or city is requested only when needed.
- Review the declared calculation convention and generate the report. Method differences and unavailable results remain visible.
- When signed in, wait for the cloud-save confirmation. Reopen saved reports from your account history to recover their settings.
Frequently asked questions
Why are similarly named festival variants listed separately?
They use different declared source windows or rules. Selecting a variant makes the comparison reproducible.
Will every request produce a resolved festival date?
No. Missing anchors or unresolved rule decisions remain visible and are not converted into a guessed date.
Will this report be saved automatically?
When you are signed in, a successful calculation is saved to your account. Wait for the cloud-save confirmation before leaving the page; guest results are not account records.
