Jewish · worldwide · the date moves each year
Eight nights in Kislev — one more candle each night, in a window where it can be seen.
Hanukkah remembers the rededication of the Temple in Jerusalem in the second century BCE, and the tradition that one day's worth of oil burned for eight. The menorah has nine branches: eight nights plus the shamash, the helper candle that lights the others and is never counted among them.
The candle that does the lighting is not counted. A child can hold that idea for a lifetime.
Put the menorah where it can be seen from outside — the point is that it is public. Foods fried in oil.