Topic: GOES-18 and GOES-19 ABI Lunar Trending Calibration Scans scheduled from January 6 through January 8, 2026.

Date/Time Issued: December 30, 2025 2034Z

Product(s) or Data Impacted: GOES-18 and GOES-19 ABI MESO-2 outages

Date/Time of Initial Impact: January 6, 2026 20:08:12Z (JDAY 006)

Date/Time of Expected End: January 8, 2026 01:51:34Z (JDAY 008)

Length of Outage:  Approximately 2 minutes for each event. See the schedule below.

Details/Specifics: Several, very short, GOES-18 and GOES-19 routine calibration scans for lunar trending will be performed between January 6 and January 8, 2026, resulting in an outage of ABI MESO-2 products for about 2 minutes for each event. ABI MESO-1 will still be available during this time. The schedules are below:

Impacts:

GOES-18:

·         01/07/2026 (DOY 007) 00:18:53 UTC & 00:34:53 UTC

·         01/08/2026 (DOY 008) 00:30:10 UTC & 01:51:34 UTC

GOES-19:

·         01/06/2026 (DOY 006) 20:08:12 UTC & 20:11:12 UTC

·         01/07/2026 (DOY 007) 20:17:23 UTC & 21:33:18 UTC