How to calculate Day of the week for a given date Easy and helpful solutions for your math homework
How to start? To
calculate the day of the week for a given date, first of all we need to find out the number of odd days.
Odd
Days: Number of days more than the complete number of weeks in given period.
Leap Year
: The year which is divisible by 4.
A
normal year has 365 days
A
leap year has 366 days
Odd Days Counting One
normal year = 365 days = 52weeks + 1day
• One normal year has one odd day
One
leap year = 366 days = 52weeks + 2days
• One leap year has two odd days
100
years = 76 ordinary years + 24 leap years = 5200 weeks + 124 days = 5217 weeks + 5 days • 100 years have 5 odd days
400
years have (20+1) 0 odd days
No of ODD Days-Day of the week No of Odd Days
Day of the week
0 1 2 3 4 5 6
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Example problem What was the day of the week , first foot ball world cup is played? The
day is July 13 1930
400
years have 0 odd days
1930=(1600
+300+30)
Odd days=(0+15+1)=16
From
1st Jan to 13th July= 194 days= 27 weeks+ 5 days
Total
odd days=16+5=21= 0 Odd days
So
the day is Sunday
Understanding of this concept can help you to easily solve your math home work .