The days are long in Patagonia during the summer months. There's hazy predawn light just after 5:15 am and it's easy to be on the water with plenty of light to see at 10:30 pm. When the days are warmer in late December and early January there is an evening hatch and it's worth postponing dinner until 11:15 or so and that Chilean wine tastes even better after having witnessed sippers eating caddis and mayflies...