Encyclopedia > January 1

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January 1

January 1 is the 1st day of the year in the Gregorian Calendar. There are 364 days remaining (365 in leap years).

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Holidays and observances

See Also:

December 31 - January 2 - December 1 - February 1 -- listing of all days

January, February, March, April, May, June, July, August, September, October, November, December

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Dirichlet character

... is the function χ(n) = (-1)(n-1)/2 for odd n and χ(n) = 0 for even n. This character has period 4. If p is a prime number, then the function χ(n) = (n/p) ...