Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Sort Refine results Categories Weather Atmospheric Composition Land Ocean Data Meteosat Metop Sentinel Tags Meteosat Second Generation (MSG) OLCI SEVIRI Meteosat Third Generation (MTG) Polar ASCAT GOME-2 SLSTR SRAL Sentinel-3 Africa NOAA EPS Europe Asia S America GOES MODIS VIIRS ABI AHI Date 2018 Date December SHOW ALL Sort by Start Date Order Ascending Descending 2 results Case study January–December 2019 Image Library top ten for 2019 A look at our most popular case studies from 2019. 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.