Abbreviations of Months of the Year, Days of the Week, and Other Abbreviations of Time


Month Abbreviaton

What is the proper way to abbreviate the word “month”? Unfortunately, there is no one proper way. It all depends on context:- mth (plural mths) – 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 are spelled out in full.


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.


See also:

Seasons of the Year (Typically in North America)


spring – March, April, May
summer – June, July, August
autumn or fall – September, October, November
winter – December, January, February


See also:

  • The Seasons on Earth from Department of Astronomy, Cornell University, Ithaca, NY.
  • Earth’s Seasons. Seasons are the result of the tilt of the Earth’s axis, from Enchanted Learning.

Abbreviations of Days of the Week


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.


See also:

  • Symbols for Days of the Week – Historical symbols for the days of the week, by D. Glenn Arthur, Jr., Baltimore, MD.
  • Day of the Week – Find out what day of the week did a certain date fall on, by Stephen C. Phillips, University of Southampton, UK.

Other Abbreviations of Time


second – sec. minute – min.
hour – hr. 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)