Cheers.
It was a winter time so yes they were shot during afternoon, probably somewhere around 13:00 - 15:00. They were shot with Canon 5D MK II so fastest shutter speed I could use was 1/160th. As it was quite dark this wasn't a problem at all.
On the first photo I had single 580 EX II on a tripod with an umbrella. I had it right next to me on my left side. Shot using 16-35 mm or 24-105 mm on wide end, can't remember anymore but it was most likely the latter because I think I only got the wide angle a year later.
Second photo was shot using two Elinchrom 400ws lights with small shoftboxes on them. It was one of those starter packs they sold at the time and still do. I didn't have battery power for them but I solved the issue by having around 100 meters of power cord and tapped that in the nearby building. One light was behind them to the right and the other one on my side to the left. One behind them had quite a bit more punch as you can see from the photo. I asked bride and groom to grab some snow and toss it in the air. It didn't take very many shots. Shutter speed was probably 1/160th on this one as well. I must have been using 70-200 mm 2.8 on that.
Good light rarely takes more than one flash if you're outdoors. These days I'm using mostly Elinchrom Ranger Quadra for the extra punch it gives over small hotshoe flashes.