Solstice
Today's the Summer Solstice. Pagans everywhere rejoice. So do some christians. Not as much as in the winter, when our Christmas falls so close to older holidays, but still some scattered remnants hold on to bits of a forgotten past.
For catholics, the feast day of St. John the Baptist is coming. Unlike most other Saints Days, St. John the Baptist's day marks his birth, not his death. Just as Christ's birth is celebrated a few days after the Winter Solstice, so too is the forerunner of Christ's birth celebrated a few days after the Summer.
What an amazing coincidence!
In all seriousness, enjoy the Solstice you pagans and you catholics (whoever still mark the Saint's Days, anyway). Astronomers too, though I suspect the winter one's more beneficial for your purposes.
I wonder if
Cosmos I was launched with the Solstice in mind?
Nah, it's got to be coincidence.