Calendars & Precession

▸ Loading Earth orbiting the Sun (23.5° axis)…

▸ Year = 365.2422 days → the 4–100–400 leap-year rule

▸ Lunar month 29.53 days — lunisolar calendars

▸ Axial precession ~25,770 years — the pole star changes…

▸ Online. ✅

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📅 Calendar

Days elapsed—

Months (lunar)—

Years—

Pole star—

Scenario—

Astronomy → calendar

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Drag Precession to rotate the north axis through the pole stars · pick a unit / scenario on the right

Day length (daylight hours) through the seasonsdaylight hours