If 09/12/2001(DD/MM/YYYY) happens to be Sunday, then 09/12/1971 would ...
30 years. The number of leap years is 8 (1972,1976,1980,1984,1988,1992,1996,2000).
So, the total number of days = 22*365 + 8*366 = 10958
10958 mod 7 = 3
Since 9/12/2001 is a Sunday, 9/12/1971 should be a Thursday.
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If 09/12/2001(DD/MM/YYYY) happens to be Sunday, then 09/12/1971 would ...
Explanation:
Given Dates:
09/12/2001 (DD/MM/YYYY) = Sunday
09/12/1971 (DD/MM/YYYY)
Identifying the Day of the Week:
To determine the day of the week for 09/12/1971, we need to consider the number of days between 09/12/1971 and 09/12/2001.
Calculating the Difference:
The difference between 09/12/1971 and 09/12/2001 is 30 years.
Now, we need to consider the number of days in these 30 years, including leap years.
Leap Years:
From 1971 to 2001, there are 7 leap years (1972, 1976, 1980, 1984, 1988, 1992, 1996).
Calculating Total Days:
Number of days = 30 years * 365 days/year + 7 leap years = 10957 days
Day of the Week:
Now, when we divide the total days by 7 (since there are 7 days in a week), the remainder will give us the day of the week for 09/12/1971.
Calculation:
Sunday (09/12/2001) + 10957 days = Thursday
Therefore, if 09/12/2001 was a Sunday, then 09/12/1971 would have been a Thursday.