Dates and Times
- Spell out all months standing alone or with a year alone:
- August, August 2011, but Aug. 17, 2011
- Abbreviate only Jan., Feb., Aug., Sept., Oct., Nov. and Dec.
- Spell out March, April, May, June, July
- Weekdays are abbreviated only in tabular matter and without periods
- Eg: if listed in a table: Mon, Tue, Wed, Thu, Fri, Sat
- Show dates using the month first, date second and year third:
- Oct. 27, 2011
- When writing decade names in numerals, do not use an apostrophe before the "s." An apostrophe precedes the shortened numerical form of the decade:
- the 1930s, the '30s, the mid-1930s
- When expressing dates without a year, do not use the ordinal form:
- November 8, not November 8th
- Date range - write the numbers out using an en dash (slightly longer than a hyphen), not a slash:
- 2011-2012 or 1987-89 (not '87-'89)
*Note: The one exception is in the expression of academic year:
- the 2011/12 academic year
- Use periods for lowercase abbreviations a.m. and p.m.
- 10 a.m. (not 10:00 a.m.) but 5:30 p.m.
- 1:30-5 p.m. (one ‘p.m.') rather than 1:30 p.m.-5 p.m.
- noon or midnight, not 12 a.m. or 12 p.m., to avoid confusion
- Use "from" and "to" when writing a range of times but use an en dash in tables:
- Reception, 7-10 p.m.
- The meeting went from 9 to 10:30 a.m.