Page 108 - How to Develop A SUPER-POWER MEMORY

112 It Pays to Remember Dates

1965 1960 1961
1971 1966 1967
1982 1977 1972
1983 1978
You now have all the information necessary to do the cal-
endar stunt, except for one thing. If it is a leap year and the
date you are interested in is for either January or February
—then the day of the week will be one day earlier than
what your calculations tell you. For example:— If you
wanted to find the day of the week for February 15th,
1944:— The key for 1944 is 6- Add this to the key for Feb-
ruary, which is 4, to get a total of 10. Remove the seven,
leaving 3. Add the 3 to the day minus the sevens, (15th
day minus 14) which is 3 plus one, giving you a final total
of 4. Four would ordinarily represent Wednesday, but in
this case, you know that it is actually one day earlier, or
Tuesday.
Remember that you do this only for January and Febru-
ary of a leap year. You can tell if a year is a leap year by
dividing four into the last two digits. If four goes in evenly,
with no remainder, then it is a leap year. (1944—4 into 44
is 11, no remainder). The year 1900 is not a leap year.
Two more examples of the system:—
June 2, 1923 — 0 plus 5 is 5
5 plus 2 is 7
7 minus 7 is 0
0 is Saturday.
January 29, 1937 — 4 plus 1 is 5
5 plus 29 is 34
34 minus 28 (4 X 7) is 6
6 is Friday.
See if you can find the day of the week for the following
dates:— September 9, 1906, January 18, 1916 (leap year),
August 20, 1974, March 12, 1931 and December 25, 1921.
I don't intend to tell you that this system is a snap to