- Do not use ordinals in dates (a July 2 meeting, not a July 2nd meeting).
- Do not abbreviate days or months in body text (meeting was held Tuesday, February 15, not Tues., Feb. 15).
- Set off the year from the month with a comma. Use this form for decades: 1960s (no apostrophe). When omitting the century, use left-facing apostrophe before the number: the ’60s
Examples: Monday, September 3, 2002; August, 2005; 2000-01; class of ’89
- Time is written in figures, except noon and midnight.
- The :00 isn’t necessary except to make lists look tidier.
- a.m., p.m. (not am, pm with no periods)
- Acceptable: 9 o’clock this morning; 8 in the evening
- Redundant: 8 p.m. tonight
Examples: 10 a.m., 10:30 a.m., noon, 2 to 4 p.m., midnight.