Vacation

Just starting my winter holiday. Next month there are also days free from work. Easter is coming. The date of easter is moving around. Found an algorithm from wikipedia for counting the day of easter sunday. Here is an implementation of "Meeus/Jones/Butcher" algorithm in SQL:

select to_date((p+1)||'-'||n||'-'||vu,'dd-mm-yyyy')
from (
select vu, a, b, c, d, e, f, g, h, i, k, l, m, trunc((h+l-7*m+114)/31) as n, mod(h+l-7*m+114,31) as p
from (
select vu, a, b, c, d, e, f, g, h, i, k, l, trunc((a+11*h+22*l)/451) as m
from (
select vu, a, b, c, d, e, f, g, h, i, k, mod(32+2*e+2*i-h-k,7) as l
from (
select vu, a, b, c, d, e, f, g, mod(19*a+b-d-g+15,30) as h, trunc(c/4) as i, mod(c,4) as k
from (
select vu, a, b, c, d, e, f, trunc((b-f+1)/3) as g
from (
select vu, a, b, c, trunc(b/4) as d, mod(b,4) as e, trunc((b+8)/25) as f
from (
select vu, mod(vu,19) as a, trunc(vu/100) as b, mod(vu,100) as c
from (
select level+1999 vu
from dual connect by level <= 20 

) ) ) ) ) ) ) )

;