local mean time
Scientific-
Solar time as measured by the position of the mean sun with respect to an observer's local meridian. Like apparent time, local mean time differs continuously with the observer's longitude and is not standardized over a time zone. However, a day as measured by local mean time does not vary in length throughout the year—it is always 24 hours.
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Compare apparent time See more at mean time solar time
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Prior to the institutionalization of standard time, clocks were set using local meridians or local mean time, and they varied widely.
From The New Yorker
At 3h. 38m. 40s., local mean time, the first contact took place, and the first photogram taken, shewing a slight indentation on the sun’s limb.
From Project Gutenberg
At 10 p.m., local mean time, January 25, 2008, the tracer hiccupped and, all by itself, went to sleep!
From Project Gutenberg
To find Local Mean Time you must apply the Longitude you are in.
From Project Gutenberg
The result will be the local mean time of the star's meridian passage.
From Project Gutenberg
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
