The Child Sex Offender (CSO) “holidays” when the most children are tortured and sometimes murdered revolve around the pagan calendar with the biggest being Easter, then winter solstice and summer solstice, and the full moons and black moons for smaller ceremonies. The dates change every year according to the moon's own cycle. The children's birthdays are also sometimes used as a day for rituals, other times their birthdays are forgotten, it appears to depend on the group.
The 25th of April is also a big one for CSOs worldwide, including those not involved in Satanic Ritual Abuse (SRA). It's called Alice Day, after Carol's book Alice in Wonderland (he was a famous CSO). This is a global day of celebration for the sexual abuse of young girls. There is another date celebrating the abuse of young boys but I'm not sure what it is.