local mean sidereal time

noun

A time scale indicating the immediate position of an observer relative to the stars, calculated by adding the longitude of the observer, measured east of Greenwich, to Greenwich sidereal time (GMST).

Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

nounlocal mean sidereal time (countable and uncountable, plural local mean sidereal times)

plural local mean sidereal times

  1. countableuncountableastronomyA time scale indicating the immediate position of an observer relative to the stars, calculated by adding the longitude of the observer, measured east of Greenwich, to Greenwich sidereal time (GMST).
Cite this entry
APA

local mean sidereal time. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/local%20mean%20sidereal%20time

MLA

“local mean sidereal time.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/local%20mean%20sidereal%20time. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “local mean sidereal time,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/local%20mean%20sidereal%20time.

Source: local mean sidereal time on Wiktionary, CC BY-SA 4.0.