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Time and Why
Time is where events can be ordered from the past through the present and into the future, and is also the measure of the duration of events/ intervals between them.
Common student sentenced involving time
- "Time to go to bed"
- "Time to rise"
- "Time to play"
- "Daytime"
- "Nighttime"
- "Time to sow, and a time to reap" (Farmers-Crop planting and harvesting-Basic Need Food.)
Time existed before the clock and calendar, so people found ways to determine a moment in time or an approximation of time duration through observation of the physical world.
The original units of time are based on the motion of the Earth (seasons to cycle once), Sun (appearing to rise and set), and Moon (phases that change over roughly 28 days from Full Moon to Full Moon).
Rotate(Rotation)-Spin in place
Revolve(Revolution)-To travel around on spot.
As you can see, time involving days and smaller units are direct fractional representations
day=24 hours, hour=60 minutes, minute= 60 seconds
The problem is when you measure time beyond a day using cycles based on the motions of the Earth and Moon relative to the Sun you get:
Year=365.24 days
Lunar Month=27.32 days.
These numbers are not direct fractional representations. After 4 years, there would be an extra day. Also, using the Lunar cycle would result in 12.36 months as opposed to 12. Over time, these small differences would result in large discrepancies when compared to the seasons. Winter weather would occur in August and Summer weather would occur in January!
Calendar created to solve these problems. Lunar months were done away with and the yearly cycle was divided into mostly 30 and 31 day/month units with one 28 day/month. A extra day was added to a month in February every 4th year to take into consideration of the yearly increase of a day every four years from Earth revolution around the Sun.
30 Days hath September, April, June, and November
All the rest have 31, except February which has 28
And one day more each year in four.
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