Use figures only for the days of the month, omitting st, nd, rd or th: May 1, not May 1st.
When the month, day, and year are included, place a comma between the date and the year. Example:
If the day is included, abbreviate the following months as such: Jan., Feb., Aug., Sept., Oct., Nov., and Dec. If the day is not included, spell out the month. Never abbreviate the shorter months: March, April, May, June, and July.
Do not abbreviate or use a comma if the month stands alone or with the year only. Example:
When expressing time, use a.m. or p.m. and figures only: Examples:
When expressing a beginning and ending time, use “to” instead of a hyphen. If both times are in the a.m. or in the p.m., use the time stamp only after the second figure. If the times cross noon or midnight, use a.m./p.m. on both references: Examples:
When used in copy, include the time, day, and date in that respective order, spelling out the weekday and applying the appropriate style rule to the month (noted above). Example:
Example: Join the Alumni Association for Taste of New Orleans, an annual scholarship fundraising event, from 7 to 11 p.m. Thursday, March 17, 2011, in the Bailey Alumni Center.