Topic: GOES-18 and GOES-19 ABI Lunar Trending Calibration Scans Scheduled from August 10th through August 14th, 2025

Date/Time Issued:  August 7, 2025 1830Z

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

Date/Time of Initial Impact: August 10, 2025 (DOY 222) 18:02:48 UTC

Date/Time of Expected End: August 14, 2025 (DOY 226)  00:56:58 UTC

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

Details/Specifics of Change:

Several, very short, GOES-18 and GOES-19 routine calibration scans for lunar trending will be performed between August 10th - August 14th, 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:

·       08/10/2025 (DOY 222) 22:08:51 UTC & 22:57:14 UTC

·       08/14/2025 (DOY 226) 00:53:58 UTC & 00:56:58 UTC

GOES-19:

·       08/10/2025 (DOY 222) 18:02:48 UTC & 18:30:48 UTC

·       08/13/2025 (DOY 225) 20:27:38 UTC & 20:48:38 UTC

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