Dictionary.com
definitions

calendar day

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

Origin of calendar day

First recorded in 1840–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for calendar day

Historical Examples of calendar day

  • The University of Oxford still offers public thanks for Bodley's generosity upon his calendar-day.

    The Great Book-Collectors

    Charles Isaac Elton and Mary Augusta Elton

British Dictionary definitions for calendar day

calendar day

noun
  1. See day (def. 1)
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