Topic: GOES-18 and GOES-19 ABI Lunar Trending Calibration Scans Scheduled from  April 26 through April 29, 2026

Date/Time Issued:  April 21, 2026 1955Z

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

Date/Time of Initial Impact: April 26, 2026 (DOY 116) 12:52:53 UTC

Date/Time of Expected End: April 29, 2026 (DOY 119) 19:49:15 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  April 26 through April 29, 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:

·         04/26/2026 (DOY 116) 17:01:39 UTC & 17:59:15 UTC

·         04/29/2026 (DOY 119) 19:23:28 UTC & 19:49:28 UTC

GOES-19:

·         04/26/2026 (DOY 116) 12:52:53 UTC & 13:37:29 UTC

·         04/29/2026 (DOY 119) 14:59:28 UTC & 15:43:07 UTC

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