This weather site uses provides meteorological imaging from the Himawari-8 Earth observing satellite in GEO. https://www.cwb.gov.tw/eng/
The web site contains the following item:
2020-02-05:Around midnight during the spring and fall eclipse periods, sunlight can directly enter the satellite sensor. To avoid this, the part of the observation area can be skipped. The period of influence is from 19th February to 19th April.
Question: Why around midnight and during this particular period?