Solstice images of Antarctica and Alaska
GOES-16 “Red” Visible (0.64 µm) images [click to play animation | MP4]
In spite of receiving 24 hours of sunlight, interior areas of the continent remained quite cold — due to high elevation and deep snow cover. For example, surface air temperatures at station 8927 near the center of Antarctica remained within the -25 to -35ºF range on 21 December (source).
In the Northern Hemisphere, GOES-17 (GOES-West) Visible images (below) revealed a few hours of illumination of the southern summits of Denali and nearby portions of the Alaska Range. Note the presence of much colder surface air temperatures (-20s and -30s F) north of the Alaska Range.GOES-17 “Red” Visible (0.64 µm) images [click to play animation | MP4]