What is the proper way to abbreviate the word “month”? Unfortunately, there is no only proper way. It all depends on context: mth (plural mths) is most popular.
mo. (plural mos.).
MM and M are usually used in date formats like MM/DD/YY. In some documents it is common to see just “m”.
Please note: Abbreviations used on this page denote common usage unrelated to documenting sources. When documenting sources using MLA style, the months with four or fewer letters, e.g. May, June, and July are not abbreviated, the remaining months Jan., Feb., Mar., Apr., Aug., Sept., Oct., Nov. and Dec. are abbreviated. When documenting sources using APA style, no abbreviations are used, all months should be spelled out in full. Both months and days of the week should start with capital letters and end with a period.
|1. January – Jan.||2 . February – Feb.|
|3. March – Mar.||4. April – Apr.|
|5. May – May||6. June – Jun.|
|7. July – Jul.||8. August – Aug.|
|9. September – Sep. or Sept.||10. October – Oct.|
|11. November – Nov.||12. December – Dec.|
- Origin of the names of the months from Encyclopedia Mythica.
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|spring – March, April, May|
|summer – June, July, August|
|autumn or fall – September, October, November|
|winter – December, January, February|
|1. Sunday – Sun.||2. Monday – Mon.|
|3. Tuesday – Tu., Tue., or Tues.||4. Wednesday – Wed.|
|5. Thursday – Th., Thu., Thur., or Thurs.||6. Friday – Fri.|
|7. Saturday – Sat.|
Other Abbreviations of Time
|second – sec.||minute – min.|
|hour – hr. (sometimes h.)||week – wk.|
|ante meridiem (before noon) – a.m.||post meridiem (after noon) – p.m.|
|midnight – 12:00 a.m.||noon – 12:00 p.m.|
|month – mo.||year – yr.|
|century – cent.||before Christ – BC or B.C. (e.g. 30 BC)|
|anno Domini (in the year of our Lord) after birth of Christ – AD or A.D.
(e.g. AD 2005)
|before common era – BCE or B.C.E. (same as BC) (e.g. 30 BCE)||common era – CE or C.E. (Christian Era, same as AD)
(e.g. 2005 CE)
You may write A.M. and P.M. using all capital letters or all lower case letters. However, a style you have chosen must be followed consistently throughout the entire document. You should not confuse the two styles.
- “Common Abbreviations.” The New Lexicon Webster’s Encyclopedic Dictionary of the English Language. Canadian ed. New York: Lexicon, 1988, CA1-8.
(Above reference out of print. Closest match currently available: Webster’s Encyclopedic Unabridged Dictionary of the English Language, 1996 ed.)
- Gibaldi, Joseph. MLA Handbook for Writers of Research Papers. 6th ed. New York: MLA, 2003, 263.