post meridiem

Etymology
From +, accusative singular of.

Adverb

 * 1) After noon, in the afternoon.
 * 2) * 1853, John Drew, Manual of Astronomy: A Popular Treatise on Descriptive, Physical, and Practical Astronomy, with a Familiar Explanation of Astronomical Instruments and the Best Methods of Using Them, Second Edition, George Bell, page 237,
 * The civil day begins at midnight, and reckons 12 hours ante meridiem, or before noon, and 12 hours post meridiem, or after noon.
 * 1) * 1923, Christopher Morley, The Powder of Sympathy, Doubleday, Page &amp; Company, page 84,
 * We reached that amiable town around two hours post meridiem, exceedingly hungry from our anxieties en route.