obs NOAA GeoSummit Jan2, ‘20 says a cold. 23:13 utc temp had a min -64,9C...also 23:15+23:16 utc..data ok.
At DMI Summit, now closed, the lowest temp ever was -63,3C Feb, 21, 2002. Only obs every 3 hrs, no min/max temp from that station.
I can’t see -66C in GeoSummit NOAA data?

— John Cappelen (@JohnCappelen) February 29, 2020