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Calendar and Day Calculations
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What day of the week was on Nov 15, 1974 ?
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A
Friday
💡 Explanation:
Using January 1, 1900 (Monday) as an anchor, there are 74 years and 18 leap years up to 1974, resulting in 92 odd days (or 1 odd day). Thus, January 1, 1974 was a Tuesday. Adding 318 elapsed days to November 15 (318 modulo 7 is 3) shifts Tuesday by 3 days to Friday.