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There is no simple formula. You have to calculate the number of full years elapsed and multiply that by 365; add one day for each Feb. 29 elapsed in those full years (in years that are divisible by 4); then count off the whole months (remembering that some months have 30 days, some 31, some 28 or 29), and finally add the number of days.

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Q: What formula is used to determine the number of days from a specific day?
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multiply number of days by 24. so the formula would be '''hours = days x 24'''

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