Follow the guidelines in the聽Chicago Manual.
A few general guidelines include:
Use numbers to refer to time in most instances. In most editorial text, references to聽a.m.听补苍诲听p.m.聽should be lowercased and include periods.
- The class begins at 8 a.m. and ends at 9:10 a.m.
Use noon (instead of 12 p.m.) and midnight (instead of 12 a.m.)
When it鈥檚 important to note the time zone, include a three-letter abbreviation in parentheses after the reference to the time.
- The webcast takes place at noon (EST), Saturday, October 15.