AncientIQ

Planetary Hours

See the current or selected planetary hour and a full local schedule.

Date, selected city and timezone · Basic calculation available without an account when enabled.

Choose a date and location

Choose a city to fill coordinates and timezone.

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Location details & calculation settings

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What Planetary Hours calculates

See the current or selected planetary hour and a full local schedule.

How the method works

Sea-level sunrise/sunset from Astronomy Engine, including standard atmospheric refraction and the solar upper limb. Divide sunrise→sunset and sunset→next sunrise into 12 equal elapsed-time intervals each. Sequence Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon; first hour uses weekday ruler. A planetary day starts at sunrise. No fabricated polar-day schedule.

Historical context & source status

ANCIENTIQ EXPERIMENTAL. The calculation policy is explicit. Modern descriptions are AncientIQ interpretations; no verified historical statement or attribution to Papus or Sepharial is attached.

View methodology

Questions about this calculator

Why are these hours unequal?

Daylight and night are each divided into twelve intervals. Their lengths change with the date and location.

What happens before sunrise?

The active hour belongs to the planetary day that began at the previous sunrise. The displayed cycle date makes this explicit.

What does a future or past date show?

The first hour at the selected local sunrise. Current-time results are frozen snapshots; refresh the calculation to obtain a new current hour.

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