dates

• Abbreviate the following months when used with a specific date: Jan., Feb., Aug., Sept., Oct., Nov., Dec. Abbreviate these also if the month starts a sentence. Spell out months when used alone or with only the year. The conference will be held Aug. 3-5. General Convention is planned for July 2022. Feb. 3 is the deadline to apply for the grant.
• The year is not needed in date references within the current 12-month period: The next meeting of the Executive Council will be on Oct. 22. An exception might be for a formal event program or invitation. 
  • When referring to a past or future year, include the year. Set off with commas if including a complete date: The target completion date for the project is Aug. 15, 2030, which will be 10 years after it started.
  • See also years
• Do not use ordinal numbers such as 1st, 2nd, 3rd when writing a day of the month.