Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Sort Refine results Categories Sentinel Weather Data Meteosat Tags Meteosat Second Generation (MSG) OLCI SEVIRI Meteosat Third Generation (MTG) GOES Polar Sentinel-3 Date 2018 Date December SHOW ALL Sort by Start Date Order Ascending Descending 1 result Case study 21 December 2018 03:00 UTC December solstice near the southern polar circle December solstice occurred in 2018 at 22:23 UTC on 21 December and could be 'seen' in satellite imagery.