It’s 12 O’Clock Somewhere
In writing, do not use 12 p.m. or 12 a.m. or 12 noon or 12 midnight.
Use noon or midnight to refer to these times.
And, when you use the appreviation p.m. or a.m., always use the periods: p.m.; a.m.
Thus, it is not:
11am - 12pm
but rather:
11 a.m. - Noon
Now go, and write better.
