3:40am
3:40 am Just the upper limb of the moon remains to set along the South Buttress of Denali. At this moment Venus was less than 1° above the presumed flat horizon, and the azimuth of that spot is 347° (just 13° left of due north!). A slight change in declination can have a dramatic change in set location when Venus is moving nearly parallel to the horizon. Indeed, if the Alaska Range were not to our north, Venus WOULD be circumpolar (it would not set) at the latitude of Talkeetna and Trapper Creek, even though we are more than 4 degree south of the Arctic Circle (where the Sun is circumpolar on the Summer Solstice).
