Zeller's Rule : As the name suggests, this technique has been named after its founder Zeller. This is probably the best method for solving "Dates and Calendar" problems. Using this rule, you can find the day of any particular date within second. You can Participate in various quizzes of our Mission SSC CGL 2016 series for doing better in actual exam.

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Example – What was the day on 25/03/2009?
Sol  F = 25 + [{(13 x1) 1}/5] + 09 + 09/4 + 20/4 – (2 x 20)
= 25 + 12/5 + 09 + 09/4 + 20/4  2×20
=25+2+09+2+540 [ We will just consider the integral value and ignore the value after decimal]
= 43 – 40 =
= 25 + 12/5 + 09 + 09/4 + 20/4  2×20
=25+2+09+2+540 [ We will just consider the integral value and ignore the value after decimal]
= 43 – 40 =

So it’s Wednesday on 25th march, 2009.
If the number is more than 7, divide the no. by 7. The remainder will give you the day.
Q1.What was the day on 31st Oct 1984?
(a)Friday (b)Sunday
(c)Wednesday (d)Monday
Q2.What was the day on 27th Dec 1985?
(a)Friday (b)Monday
(c)Tuesday (d)Sunday
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