Days of the week

Capitalize them and spell them out. Do not abbreviate, except when needed in a tabular format: Sun, Mon, Tue, Wed, Thu, Fri, Sat (three letters, without periods). Separate days of the week from the month with a comma.
  • The party is Monday, Aug. 4, 2010.

Dates in copy

Always use Arabic figures, without st, nd, rd or th. When a month is used with a specific date, abbreviate only Jan., Feb., Aug., Sept., Oct., Nov. and Dec. Spell out when using alone, or with a year alone.
  • January 1972 was a cold month. Jan. 2 was the coldest day.

Dates in tables

Use these three-letter forms without a period:
  • Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec

When space limitations require, use numerals (no beginning zero) separated by slashes (5/5/07). Note: try to avoid this format if possible.

Decades and centuries

Use an s without an apostrophe to indicate spans of decades or centuries
  • the 1890s
  • the 1800s
  • the '80s