Description: This stock medical illustration depicts the following muscles of the face (facial muscles) : occipitofrontalis, levator labii superioris, zygomaticus minor, zygamticus major, buccinator, levator anguli oris, depressor labii inferioris, temporalis, procerus, orbicularis oculi, levator labii superior alaeque nasi, orbicularis oris, ...
Converting 24 Hour Clock to AM/PM. For the first hour of the day (0:00 to 0:59), add 12 Hours, make it AM. Examples: 0:10 = 12:10 AM, 0:40 = 12:40 AM. From 1:00 to 11:59, just make it AM. Examples: 1:15 = 1:15 AM, 11:25 = 11:25 AM. From 12:00 to 12:59, just make it PM. Examples: 12:10 = 12:10 PM, 12:55 = 12:55 PM.
The main weakness of the 12-hour system is a widespread confusion about which abbreviation should be used for noon and midnight: neither moment can logically be identified as before noon (am) or after noon (pm). For example, the moment of midnight occurs precisely 12 hours after noon on the previous day and 12 hours before noon on the following day.