Sun & Moon
Seasons Calculator
Show approximate equinox and solstice dates for a selected year.
Open the tool to see results.
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How this tool works
Uses approximate UTC dates for ordinary planning and education, not official astronomical timing.
All calculations run in your browser. No account is required, and this static version does not store your inputs.
Are the times exact?
No. This first version gives approximate dates and should not replace official almanac data.