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calendar day

American  

noun

  1. the period from one midnight to the following midnight.

calendar day British  

noun

  1. See day

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of calendar day

First recorded in 1840–50

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.

Downtown L.A. hit a high of 92 degrees on Monday — one degree short of the record of 93 for the calendar day — but was expected to reach only 61 degrees by Friday.

From Los Angeles Times • Nov. 11, 2025

And the Charles M. Schulz-Sonoma County Airport near Santa Rosa recorded 2.72 inches, breaking the record for the calendar day set last year, when 1.85 inches fell.

From Los Angeles Times • Feb. 5, 2025

Advent calendar day 22: GB's Kerr wins 1500m gold.

From BBC • Aug. 6, 2024

Mark your calendars, y’all, because next Tuesday ain’t your average calendar day.

From Seattle Times • Feb. 6, 2024

The attic is the place of all places you would most love to be on this particular calendar day!

From The Long Ago by Wright, J. W. (Jacob William)

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.