2006-07-09 01:18:36 · 15 answers · asked by deval_agrifarman 6 in Science & Mathematics ➔ Geography
thx for answer, wish that i can give 2 best answer..
but let the vote decide..
jodash got best answer..
massive got best answer for funny answer
2006-07-09 01:58:41 · update #1
Sunrise changes with the seasons. It has no consistency per say.
2006-07-09 01:22:11 · answer #1 · answered by Ray 7 · 0⤊ 1⤋
The time of sunrise changes according to your latitude and (usually) time of year. That makes sunrise a very inconsistant standard.
The earliest scientific standard for the beginning of the day was therefore noon, when the sun transits the meridian. That is easy to measure and does not change with your latitude. So hours began in the first instance to be measured from noon. Later civil practice added midnight, exactly 12 hours after noon, as the most convenient place to mark the boundary of the civil day.
In the early 20th century, the "noon standard" for almanacs was changed to the "midnight standard" to conform to civil practice
2006-07-09 17:42:36 · answer #2 · answered by Keith P 7 · 0⤊ 0⤋
Not really history but 00:00 is technically midnight. Sunrise is when the sun is in the process of rising through the horizon.
2006-07-09 01:20:48 · answer #3 · answered by Dr Drew 10 2 · 0⤊ 0⤋
I think that sunrise is used in many places as the beginning of the new day, the new year, etc, because they might not have had accurate clocks. Without clocks, they didn't know when it was midnight. However, they ALWAYS knew when the sun rose.
I learned that in watching the coverage of the transition from 1999 to 2000.
2006-07-09 18:12:45 · answer #4 · answered by Anonymous · 0⤊ 0⤋
As previous posters mentioned, sunrise and sunset changes by a few minutes every day. On the other hand, since they didn't have daylight savings time back then, the sun was always at the same place at noon. So what happened was they started the numbering at noon.
2006-07-09 01:25:31 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Words like midnight and midday were in use long before clocks, or even sundials were invented. When these devices finally did show up, the designers based them on the rotational cycle of the earth. This is why the clock has two revolutions of 1-12. The designations of a.m. (ante meridiem, or before midday) and p.m. (post meridiem, or after midday) naturally led to the designation of 12:00 a.m. (not 00:01), which means 12 hours before midday.
2006-07-09 01:50:00 · answer #6 · answered by jodash6469 1 · 0⤊ 0⤋
The cycle is slightly over 24 hours long split into 2 equal parts( day/night) Since sunrise changes daily not to mention the difference by latitude.resetting clocks daily by one to two minutes would be impractical.hence forth it is set by zenith. If you want an example check the difficulties encountered with train schedules in the late 19th century
2006-07-09 01:31:29 · answer #7 · answered by Anonymous · 0⤊ 0⤋
If 00:00:01 were sunrise, then you would be going to work or school at 1 o'clock in the mornin!!
2006-07-09 01:23:53 · answer #8 · answered by Anonymous · 0⤊ 0⤋
The time of sunrise is when the sun rises. It varies day to day and from place to place. Clocks would be completely out of sync with one another if we set all time in tune with sunrise.
2006-07-10 00:30:14 · answer #9 · answered by AF 6 · 0⤊ 0⤋
Not sure. But the sun normally doesn't rise until 7 (give or take an hour) so 0001 hrs isn't really "sunrise", but it's generally quite dark, hence midnight, I guess.
2006-07-09 01:21:27 · answer #10 · answered by zy 3 · 0⤊ 0⤋
The sun rises at a different time each day. Midnight is approx. the the middle of the night which is always the same time because no matter how long the night is, it has an equal amount of darkness either side.
2006-07-09 01:24:35 · answer #11 · answered by smelly pete 3 · 0⤊ 0⤋