The Rapha Festive 500

haha well if it is weather focused like the majority of the marketing seems to be then it wouldn't be arbitrary would it. But fair cop. they actually mention the Summer evenings here.

with the colours representing the shades of light we see in the sky at
this time of year around the world. Cold early starts, balmy summer
evenings and the slow burn and rich satisfaction of the eventual
reward: 500km, ridden in eight days or less.

I'd say theres a place for a winter solstice badge then.