| ▲ | eitau_1 4 hours ago | |
Wikipedia says it's indeed not a trivial thing https://en.wikipedia.org/wiki/Solstice#Solstice_determinatio... | ||
| ▲ | eitau_1 4 hours ago | |
Wikipedia says it's indeed not a trivial thing https://en.wikipedia.org/wiki/Solstice#Solstice_determinatio... | ||