是12 Midnight A.M.還是 12 Midnight P.M.?
[ 2007-05-25 14:51 ]
英語中關(guān)于時間的表達(dá)有個A.M.,還有個是P.M.,這樣就不用說十八點,二十三點這些讀起來比較長的表達(dá)了,可是這也造成了一個問題: 是 12
Midnight A.M.還是 12 Midnight P.M.呢?
 Neither!
Twelve midnight A.M. and twelve midnight P.M., or 00:00 A.M. and 00:00 P.M.,
mean nothing at all. They are simply the midpoints that divide the day into two
equal halves.
Each and every day begins exactly at midnight, and each A.M. begins precisely
thereafter. Similarly, each P.M. begins immediately after noon. No meaning can
be assigned to 12:00 A.M. (00:00 A.M.), or to 12:00 P.M. (00:00 P.M.). They are
merely reference points meant to simplify timetables for us.
Along the same line, the Universal Day, established by the International
Convention in 1884 in Washington, D.C., U.S.A., operates according to World
Time, or Universal Time at Greenwich, England. The logic regarding Midnight and
Noon also applies to Greenwich Mean Time, commonly referred to as GMT or Zulu
time; Midnight and Noon represent markers, or "page breaks" in the day and in
the night, and may be represented by 00:00 o'lock.
Greenwich, England also holds the distinction of being at the point of zero
longitude, where East meets West. The 1884 international agreement also
recognized this line of zero degrees longitude as the prime meridian, a point
from which all points on the earth抯 surface are measured.
（來源：coolquiz.com 英語點津 Annabel 編輯）
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