Unique Calendar
Calculation of time difference in the Earth Year and calendar year
leap yea, Gregorian calendar, how
many days in a leap year, like the Gregorian calendar,
calendar reform, Julian calendar, Gregorian vs. Julian calendar.
Unique calendar is a calendar where we can find the day from any date from 1/1/1 to any future date. This calendar clear all the confusions related to the leap year.
Main features of Unique Calendar
It contains four plates, Table 1 Table 2, Table 3, Table 4
Table 1 is a calendar of 400 years.
Table two contains month codes.
Table three contains the dates.
Table four contains days.
It contains seven year ranges, These are the cycles of this calendar
Question : Name the year in which September month have only 19 days ?
With this article we will provide you the answer to this question as well as the complete explanation to the fact behind it.
Julian Calendar:
The
Julian calendar was the 365day calendar that Julius Caesar made official in 46
B.C. It replaced a calendar based on lunar cycles.
The Julian calendar provided
for a leap year with extra day every four years. Thus, the Julian calendar
included an average of 365.25 days (365 days, 6 hours) each year.
Gregorian Calendar:
Today's calendar is the Gregorian calendar. Pope Gregory XIII corrected the Julian calendar to make the present day calendar true in 1582. He introduced this calendar from October, 1582.
Number of
days in a nonleap year = 365 days
Number of
days in a leap year = 366 days
According to the Julian calendar the year which is divisible by 4(or multiple of 4) is called
a leap year.
But this fact is not true with all the years. For example
4, 8, 12, 16, …………96 all are multiples of 4 and are the leap years.
But 100^{th} , 200^{th} , 300^{th} , years are also the
multiples of 4 but these are not the
leap years. The fact is well explained
here.
Calendar Year:
While making the calendar we take time 365 days and 6 hours. This time is called the calendar year.
Earth Year
:
Earth complete one revolution around the Sun in 365 days, 5 hours, 48 minutes and 48( 45 adjusted) seconds. This time is called the Earth year.
So there is a time difference between the Earth year and the Calendar year.
The extra time in Gregorian calendar year is adjusted as follows.
Calendar Year = 365 days 6 hours 0 minutes 0 seconds
OR = 365 days 5 hours 59 minutes 60 seconds
Earth
Year  365
days 5 hours 48 minutes 48 seconds
_____________________________________
Difference = 0
days 0 hours 11 minutes 12 seconds

Extra time
in our calendar in one year = 11 minutes 12 seconds
Extra time in our calendar in 100 Years = 11 X 100 minutes 12 X 100
seconds
= 1100 minutes 1200 seconds(20 minutes)
= 1120 minutes
= 18
hours 40 minutes

According to our calendar year 100^{th} year should be a leap year. But in order to
adjust above extra time we have to subtract 1 day (24 hours) from the 100^{th}
year. Due to this 100^{th} year not remain the leap year.
Similarly we
subtract one day from 200^{th} and 300^{th} year so that these years also
have 365 days and are becomes nonleap years.
Now we have less time in our calendar = 24 hours – 18 hours 40 minutes
= 23 hours 60 minutes
 18 hours 40 minutes
_____________________
= 5 hours 20 minutes

Less time
in our calendar in 100 years = 5 hours
20 minutes
Less time
in our calendar in 200 years = (5 hours
20 minutes) X 2
Less time
in our calendar in 300 years = (5 hours
20 minutes) X 3
Less time in our calendar in 400 years = (5 hours 20 minutes) X 4
= 5 X 4 hours 20 X 4 minutes
= 20 hours
80 minutes
=
21 hours 20 minutes

According to the previous calculation for the 100^{th} year, 400^{th} year should be a non leap year.
But in order to
adjust above less time (21 hours 20 minutes) we have to add 1 day in 400^{th} year.
So that number of
days in this year becomes 366 and it becomes a leap year.
In this way Gregorian Calendar adjust the extra time in the calendar. But still there is some time difference left.
Results from above calculation:
 All years which are multiples of 4 are called leap year.
 Only century years which are the multiples of 400 are the leap year.
 All century years which are not the multiples of 400 (like 100, 200, 300, 500, 900, 1100, 1400, 1900, 2200, ....etc) are not the leap years.
Even after this adjustment there is some extra time (2 hours 40 minutes) left in our calendar.
Due to this extra time we have seen that all multiples of 400 are leap years but 3600^{th} year again is not a leap year. This is explained as follows.
Now again there is extra time in our calendar = 24 hours – 21 hours 20 minutes
= 23 hours 60 minutes
21 hours 20 minutes
_____________________
= 2 hours
40 minutes

Extra time in our calendar in 400 years = 2
hours 40 minutes
Extra time
in our calendar in 800 years = (2 hours
40 minutes) X 2
Extra time
in our calendar in 1200 years = (2 hours
40 minutes) X 3
Extra time
in our calendar in 1600 years = (2 hours
40 minutes) X 4
Extra time
in our calendar in 2000 years = (2 hours
40 minutes) X 5
Extra time
in our calendar in 2400 years = (2 hours
40 minutes) X 6
Extra time
in our calendar in 2800 years = (2 hours
40 minutes) X 7
Extra time
in our calendar in 3200 years = (2 hours
40 minutes) X 8
Extra time
in our calendar in 3600 years = (2 hours
40 minutes) X 9
=
2 X 9 hours 40 X 9 minutes
=
18 hours 360 minutes
= 24
hours
According to the previous calculation for 400 year, 3600^{th} year will be the leap year with 24 hours (1 day) extra.
In order to adjust
this time we subtract 1 day from 3600^{th} year. So that 3600^{th}
year not remain the leap year. 3600^{th} year is a multiple of 400 but
it is not a leap year.
3600 becomes the complete cycle of earth year and all multiples of 3600 are non leap years.
Here we see
that complete time is properly adjusted in 3600 years and all years multiples of 3600 are the nonleap year.
At present most of the country in the world follow the Gregorian Calendar. Different country adopt this calendar at different times.
In United Kingdom, Julian calendar was replaced by Gregorian calendar in September, 1752.
To make the time adjustment in the calendar, September month left with the 19 days in 1752, in the history of United Kingdom.
Due to this the calendar shows 14^{th} September date immediate after 2^{nd} September.
This complete adjustment of earth year in 3600 years motivated us to make a unique calendar with complete time adjustment.
With the help of this unique calculation we made a UNIQUE CALENDAR with the help of which we can find the day from any date of history or future.
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