TIME OF DAY

DAY Use figures before a.m. and p.m.:

7 p.m.

the 7 a.m. plane

a four o'clock snack

4:30 in the morning

8:35 p.m. eastern standard time

8:35 p.m. ET, or 8:35 EDT

11 o'clock

noon (avoid the redundancy 12 noon)

midnight (avoid the redundancy 12 midnight)

four in the morning

7:35:10 (if seconds to be indicated)

Military time: Use four numbers and no punctuation for military time:

0600

1900 hours