Topic: GOES-18 and GOES-19 ABI Lunar Trending Calibration Scans scheduled from July 31 and August 04, 2026

Date/Time Issued: July 24, 2026 1947Z

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

Date/Time of Initial Impact: July 31, 2026 1827Z J/DAY 212

Date/Time of Expected End: August 04, 2026 0125Z J/DAY 216

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 July 31 and August 04, 2026 . This will result 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:

· 07/31/2026 (DOY 212) 22:34:35 UTC & 23:21:26 UTC

· 08/04/2026 (DOY 216) 00:48:52 UTC & 01:25:52 UTC

GOES-19:

· 07/31/2026 (DOY 212) 18:27:43 UTC & 18:56:43 UTC

· 08/03/2026 (DOY 215) 20:25:33 UTC & 21:17:58 UTC

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