Topic: GOES-18 and GOES-19 ABI Lunar Trending Calibration Scans scheduled from October 4th through October 7th

Date/Time Issued:  October 26, 2025, 1853Z

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

Date/Time of Initial Impact: October 4, 2025 (DOY 277) 18:32:46 UTC

Date/Time of Expected End: October 7, 2025 (DOY 280)  21:30:21 UTC

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 October 4 through October 7, 2025, 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:

·         10/04/2025 (DOY 277) 18:32:46 UTC & 19:25:55 UTC

·         10/07/2025 (DOY 280) 21:26:21 UTC & 21:30:21 UTC

GOES-19:

·         10/04/2025 (DOY 277) 14:25:17 UTC & 15:01:17 UTC

·         10/06/2025 (DOY 279) 15:38:18 UTC & 17:00:01 UTC