The Science in the Bible

Entry 10 · Section 1: Measure

Hours, Watches, and the Working Day

Vineyard laborers mark the changing daylight by numbered hours while watchmen divide the night into watches.

Scripture: Matt 20:1–16; Mark 13:35

MetrologyAstronomy

The twelve daylight hours and the watches of the night at the reference latitude, drawn for both solstices and the equinox against a fixed 24-hour scale.
The twelve daylight hours and the watches of the night at the reference latitude, drawn for both solstices and the equinox against a fixed 24-hour scale.

The question

How long was a biblical daylight hour at different seasons?

Why it matters

Seasonal hours and night watches must be interpreted within their own timekeeping systems before modern clock times are assigned.

Suggest a correction or new direction
About this preview: This page introduces the scene and question. It intentionally omits the entry's complete calculation, tables, sensitivity cases, and conclusion.