Example 2:
Date : 21st September 1965
Date + Month Code + Century code + Last 2 digits of year + (Quotient of (Last 2 digits of year/4))
The above equation can be written as
21+ 6 (September Month Code) + 0 (19th Century code) + 65 (last 2 digits of year 1965) + 16(65/4 =22 and reminder =1. Discard remainder)
The addition result is 108
Step 2:
Divide the addition result by 7 and check reminder.
In this case while you perform 108/7 you will get quotient =15 and remainder = 3.
Step 3: Neglect quotient and take remainder. Compare the remainder value with day code given above.
Here remainder =3 which corresponds to Tuesday.
Therefore the day of date 21st September 1965 is Tuesday.