I used to believe that different places would celebrate Christmas on different days because you needed it to be cold, for example Australia would have it 6 months after because of the month difference, and that it was like a sort of festivity wave.
A childhood belief about father christmas

others believed things like this
- I thought a tidal wave was acutualy a title wave because if the wave was big enough it had its own title!— Nate
- I always thought that after 1999 it would be 1990 again, but with different months and days of the week
— optional - that we celebrate New Year's because it is the day that Jesus had his brit (circumcision)Anon
- i used to think that if i didn't celebrate my birthday each year my younger sister would catch up with me— q
- I was told that for every christmas carol i sang before christmas time santa would give me one less present!— K
- My sister used to think that because I was 15 months older than her, I would die 15 months before her!— Nicola Braden