# Homework Help: When is Easter Day in 2015?

1. Feb 17, 2015

### Natasha1

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. Feb 17, 2015

### SteamKing

Staff Emeritus
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?

3. Feb 17, 2015

### Natasha1

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?

4. Feb 17, 2015

### SteamKing

Staff Emeritus

5. Feb 17, 2015

### Natasha1

I take, I am correct then

6. Feb 17, 2015

### HallsofIvy

Or you could look on a calendar!

7. Feb 17, 2015

### Natasha1

And i am correct :)