# The winter solstice: the true sun never reaches the wall (noon el
# 15.06 < 16), so the twilight sun owns the whole day - the bare wall
# used to suppress the winter sun entirely. Boots in night (el -18);
# the light reignites through the morning twilight (el -6 at ~frame
# 550 - the civil-twilight span) and winter noon is a dim warm low
# light mid-crossfade (tw 0.043, reg el 18.1).
# weather: forecast 12 21
# frames: 2200
