Didn't the evac of the Doctor in 2001-ish involve an overnight at SP Station?
Both the 2001 and the 2003 winter medevacs involved a rest period for the crew at the Pole. About 16 hours in 2001, and 12 hours in 2003. The planned rest of 10 hours in 2001 was extended due to weather concerns, and problems thawing out the aircraft and getting the skis unstuck.
Coincidentally, both medical cases involved gallstones (plus other complications).