: a calendar introduced in Rome in 46 b.c. establishing the 12-month year of 365 days with each fourth year having 366 days and the months each having 31 or 30 days except for February which has 28 or in leap years 29 days compare gregorian calendar
Examples of Julian calendar in a Sentence
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The dates differ because most Christians use the Gregorian calendar, originally introduced in 1582, while the Eastern Orthodox Church uses the Julian calendar, introduced in 45 BC.
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Marina Johnson, Louisville Courier Journal, 22 Feb. 2026
The dates differ because most Christians use the Gregorian calendar, originally introduced in 1582, while the Eastern Orthodox Church uses the Julian calendar, introduced in 45 BC.
—Marina Johnson, IndyStar, 20 Feb. 2026
The Eastern Orthodox Church follows a Julian calendar instead of the typical Gregorian, resulting in a different Easter date.
—Bebe Hodges, Cincinnati Enquirer, 13 Feb. 2026
The foundations for representative government, the 365-day Julian calendar, modern sanitation, newspapers, roads and the postal system were established in Rome.
—Los Angeles Times, 6 Feb. 2026
At a church service to mark Russian Orthodox Christmas – observed on January 7 under the Julian calendar – Putin appeared with uniformed service members and their families, publicly showing resolve to continue his war on Ukraine, despite ongoing peace efforts.
—Nathan Hodge, CNN Money, 8 Jan. 2026
Before that, under the Julian calendar, the year began on March 25.
—Rachel Treisman, NPR, 31 Dec. 2025
When the Julian calendar was later refined into the Gregorian calendar in 1582, the tradition of adding a leap day to February persisted.
—Emily Deletter, USA TODAY, 29 Feb. 2024
Indeed, his birthday was denominated as February 11, 1731, under the Julian calendar in use at the time.
—The Editors, National Review, 19 Feb. 2024
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Marina Johnson, Louisville Courier Journal, 22 Feb. 2026
The dates differ because most Christians use the Gregorian calendar, originally introduced in 1582, while the Eastern Orthodox Church uses the Julian calendar, introduced in 45 BC.
—Marina Johnson, IndyStar, 20 Feb. 2026
The Eastern Orthodox Church follows a Julian calendar instead of the typical Gregorian, resulting in a different Easter date.
—Bebe Hodges, Cincinnati Enquirer, 13 Feb. 2026
The foundations for representative government, the 365-day Julian calendar, modern sanitation, newspapers, roads and the postal system were established in Rome.
—Los Angeles Times, 6 Feb. 2026
At a church service to mark Russian Orthodox Christmas – observed on January 7 under the Julian calendar – Putin appeared with uniformed service members and their families, publicly showing resolve to continue his war on Ukraine, despite ongoing peace efforts.
—Nathan Hodge, CNN Money, 8 Jan. 2026
Before that, under the Julian calendar, the year began on March 25.
—Rachel Treisman, NPR, 31 Dec. 2025
When the Julian calendar was later refined into the Gregorian calendar in 1582, the tradition of adding a leap day to February persisted.
—Emily Deletter, USA TODAY, 29 Feb. 2024
Indeed, his birthday was denominated as February 11, 1731, under the Julian calendar in use at the time.
—The Editors, National Review, 19 Feb. 2024
Cite this Entry
“Julian calendar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Julian%20calendar. Accessed 27 Feb. 2026.
Copy CitationKids Definition
Julian calendar
noun
Ju·lian calendar
ˌjül-yən- 
: a calendar introduced in Rome in 46 b.c. establishing the 12-month year of 365 days with each fourth year having 366 days and the months each having 31 or 30 days except for February which has 28 or in leap years 29 days compare gregorian calendar
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