Phrase guide

equation of time

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

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1

noun

Meaning 1

The discrepancy between two kinds of solar time: the apparent solar time, which directly tracks the motion of the Sun, and mean solar time, which tracks a theoretical "mean" Sun with noons that are twenty-four hours apart.

Definition source: English Wiktionary via Wiktextract

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Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

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Across languages

Translations

6 source translations are retained for this English entry.

  • Finnish: ajantasaus — discrepancy between two kinds of solar time
  • French: équation du temps — discrepancy between two kinds of solar time
  • German: Zeitgleichung — discrepancy between two kinds of solar time
  • Hungarian: időegyenlet — discrepancy between two kinds of solar time
  • Romanian: ecuația timpului — discrepancy between two kinds of solar time
  • Ottoman Turkish: تعادلی زمان (taadüli zaman) — discrepancy between two kinds of solar time