Math Trick to square

EasyCal 5 Fast Multiplication Trick 5 Trick to Directly Multiply the Big Numbers

Fast Multiplication of any number - using vedic math

Fast Multiplication Squaring Trick

Finding calender dates using vedic maths

 

Note 1: 

If the months are January and February and if it is a leap year then you have to consider the previous day.

Note 2:

if the final sum is less than 7, then take the sum itself as the remainder. in this case take 2 as the remainder and this day was a Monday