DAY FOR ANY DATE (From 1900 to 2099)
It is always a pleasure to
do something extra ordinary. Finding a day for any date is one among them. If
we practice the method described in this post, we will be able to find out at a
high speed. If we practice this correctly and continuously, we will be able to
tell the day much before some one finds this out using a smart phone or laptop.
With a little practice, we can
quickly and easily determine the day of any date. First we assign a code number
to every day of the week. They are easy to remember:
Day Code
Monday 1
Tuesday 2
Wednesday 3
Thursday 4
Friday 5
Saturday 6
Sunday 7 or 0
Next we assign a code for
every month of the year. These month codes are used for any year, with two
exceptions. In a leap year (like 2000 or 2008 or 2012, etc), the month code for
January is 5, and the month code for February is 1. To make the month codes
easier to remember, use the table below.
Month Code How to
remember
January 6*
The season is WINTER (6
letters).
February 2*
February is the 2nd month
of the year.
March 2
We march with TWO feet.
April 5
APRIL and FOOLS
have 5 letters.
May 0
May Day is a HOLIDAY.
So ZERO work.
June 3
School will be open for the KID
(3 letters for the KID)
July 5
Let us assume JULIE (5
letters) will have birthday party in July
August 1
August begins with A, the 1st letter of
English alphabets.
September 4 End of RAIN
(4 letters) in Northern states.
October 6
DASERA celebrations in
Mysore. (6 letters)
November 2
11th month
of the year. 1 plus 1 is 2.
December 4
We celebrate XMAS and
the month is COLD (both are 4 letters)
*In a leap year, the code for
January is 5 and the code for February is 1. (One less than the usual code)
Year code for the current
century.
We assign a code for every year. The code for 21st century (years from
2000 to 2099) is determined as below:
Divide the last
two digits of the year by 4 (ignoring any remainder) and add the quotient to the
last two digits. Then reduce the initial year code by subtracting highest multiple of
7 from it.
For example, consider
the current year 2019. The initial year code is 19 + 4 (19/4) = 23. Highest
multiple of 7 below 23 is 21. Subtract it from 23. So the year code for 2019 is
2 (23 – 21).
Day calculation.
First, add the date, month
code and year code together. Then deduct the highest multiple of seven from the
sum. The remainder is the code for the day.
Now, let us find out the
day of December 25th of this year.
First add the
date, month code and the year code together. In our case it is 31 (25+4+2). Then subtract
the highest multiple of 7 from this result. In our case it is 3 (31 – 28). This
is the code for the day. And the day is Wednesday. So, Dec 25th of
this year will be a Wednesday.
Note: it is very
easy to remember the codes for the days and the month. For any year we can
calculate the code mentally with practice. Keep practicing and you will be able
to tell the day with a great speed. (We should be familiar with seventh table).
For your
ready reference, the multiples of 7 are: 14, 21, 28, 35, 42, 49, 56, 63, 70,
77, 84, 91, 98, 105, 112, 119. These only will be required.
Use the same
method to find out any day.
Year code for
the previous century (Years from 1900 to 1999).
Use the same
method as the current century. After determining the year code, add one to it.
That will be final year code. For example, the initial year code for 1955 will
be 55 + 13 (55/4) = 68. Highest multiple of seven is 63. So, the code is 5
(68-63). Now add one to this to get the final code for the year. Therefore, the
code for 1955 is 6 (5+1).
Let us find
out the day for 11.09.1955. Add the date and codes together. 11 + 4 + 6 = 21.
Highest multiple of seven is 21. Deduct this from the initial code. 21 – 21 =
0. Therefore 11.09.55 was a Sunday.
If you want to extend your
capabilities, use the information below.
For dates in the 1800s, add 3 to the
year code.
For dates in the 2100s, add 5 to the
year code.
more interesting
ReplyDelete