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31st vs 31th

The correct phrase here is "31st." "31th" is incorrect. The suffix "st" is used for ordinal numbers ending in 1 (e.g., 1st, 21st), while "th" is used for most other numbers.
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Explained by Miss E.
Editor at TextRanch

Last updated: July 23, 2024 • 50595 views

This is the correct form for the ordinal number 31.

"31st"

Use "31st" when referring to the ordinal number 31, as it follows the standard rule for ordinal numbers ending in 1.

Examples:

  • The event will take place on the 31st of the month.
  • She was born on the 31st of December.
  • Nov 22, 2011 ... 31st, etc. are the correct options. When you use ordinal numbers ending in 1, you use first. The only exception is eleventh, because although it ...
  • The mission of the 31st Fighter Wing, Aviano Air Base, Italy, is to: Secure the Base, Generate Combat Airpower, Ready to Deploy & Fight from Home.,
  • 31st Street Harbor is the newest and most anticipated addition to the Chicago harbor system. Completed in 2012 with slips for 1000 boats and a sustainable, eco ...
  • The 31st FW maintains two F-16 fighter squadrons, the 555th Fighter Squadron and the 510th Fighter Squadron, capable of conducting offensive and defensive air ...
  • FT1100-31ST ; Group Size. 31T [BCI] ; Capacity. 110 Ah ; Reserve Capacity. 230 min. 50 min ; CCA. 1100 Amps ; Dimensions. 12.99 x 6.81 x 9.13 in ...
  • Public Web Site for the 31st Marine Expeditionary Unit.
  • 31st Add to list Share. Definitions of 31st. adjective. coming next after the thirtieth in position.
  • 31st Union is a San Francisco Bay Area studio formed with a common purpose of crafting highly engaging entertainment and a commitment to putting fans first.
  • Aug 2, 2017 ... Often referred to 31st Street Beach, Margaret T. Burroughs Beach offers visitors incredible views of the Chicago skyline from the south.
  • The 31st Ward Community Action Group was established to bring the residents of the community together, to advocate for their needs and to support the youth, ...

Alternatives:

  • thirty-first

This is an incorrect form for the ordinal number 31.

"31th"

This form is not used in English. Always use "31st" for the ordinal number 31.
  • Nov 22, 2011 ... ... 31th or 31st in my four years English study. So which one is correct, and what about other alternatives? 31th or 31st 101th or 101st 1001th ...
  • Jan 4, 2022 ... Synonym for 31th @deannaclx You would never use 31th. In general, ordinal endings depend on the last digit, so: - 31st (thirty-firST) - 32nd ...
  • Aug 25, 2023 ... Between '31th' or '31st,' '31th' is a grammatical error. The second term is the only correct format of the numeric abbreviation of the ordinal thirty-first.
  • Sep 30, 2016 ... ... 31TH. I want a 400hp capable transmission for daily driving a d the ... What this means is, that you can run an MTX or ATX PCM if you wanted, and ...
  • Aug 9, 2024 ... Bugbugh announces indefinite hiatus/graduation. Final stream set to August 31th, 2024. News/Announcement.
  • Jul 9, 2016 ... The 31TH was designed, with regular maintenance and band adjustment required. I think that people are confusing the recommendations on the ' ...
  • May 17, 2018 ... At what point did the 2.4l vans start using the 41te? Are there easy ways to distinguish the 2 different transmissions? I thought the 31TH ...
  • Oct 23, 2008 ... A colleague of mine has a doubt about the usage of ordinal numbers in English. Which one is correct: 31st or 31th? 41st or 41th (of October) and so forth?
  • Weekdays: October 31th, 2024 *Open 9am-2pm · Additional information · Event Details ...
  • May 14, 2024 ... 30th december is monday, 31th december is tuesday. If we calculate their weeknumber, the answer is '1'. This behavior is incorrect. 30th and 31th december ...

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