It's both Summer and Winter. As for mainly being Saturday, I believe they're going to start doing both Saturday and Sunday since they will be adding D3 for future events.
As for competition, it's very solid amongst all teams.
I'm an O.G. Member of:
MoonMen | 65 Astronauts | Vice Versa | VSB
VSB Lord on deck. Respect and salute your superior officer, kids.