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When is Easter Day in 2015?

  1. Feb 17, 2015 #1
    When is Easter Day in 2015?

    Here is a method to calculate the day of Easter.

    Choose a year that we name A.
    R is the remainder of the division of A by 4.
    S is the remainder of the division of A by 7.
    T is the remainder of the division of A by 19.
    B = 19 x T + 24
    M is the remainder of the division of B by 30.
    C = (2 x R) + (4 x S) + (6 x M) + 5
    N is the remainder of the division of C by 7.
    P = M + N

    If P < 10 then Easter Day is P + 22 March.
    If P > 9 then Easter Day is P - 9 April.

    When is Easter Day in 2015?

    I do not really know how to do this, and must admit I am not sure how to even start such a problem. If anyone could help me at least start this problem and help me along the way, that would be wonderful. Thank you in advance.
     
  2. jcsd
  3. Feb 17, 2015 #2

    SteamKing

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    It's not clear why you can't follow the steps listed in the OP.

    If you want to determine when Easter falls in 2015, clearly A = 2015, using the first step above.

    Can you follow the second step, etc., and determine the date of Easter 2015?
     
  4. Feb 17, 2015 #3
    Yes sorry silly me, I took a break and came back to the question...

    This is what I got...

    A = 2015
    R = 3
    S = 6
    T = 1
    B = 43
    M = 13
    C = 113
    N = 1
    Therefore P = 14

    I therefore conclude that in 2015 Easter Day must be on the 14 - 9 = 5 April.

    Could someone just check whether I am correct please?
     
  5. Feb 17, 2015 #4

    SteamKing

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    You can Google this yourself to check your calculation. :wink:
     
  6. Feb 17, 2015 #5
    I take, I am correct then
     
  7. Feb 17, 2015 #6

    HallsofIvy

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    Or you could look on a calendar!
     
  8. Feb 17, 2015 #7
    And i am correct :)
     
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