VIIRS/NOAA-21 Data Outages
Last Update: July 1, 2025
The following table outlines major data outage periods since the start of the NOAA-21 mission.
| Year-Day | Date | Start Time (UTC) | End Time (UTC) | Comments |
|---|---|---|---|---|
| 2025-127 | May 7, 2025 | 21:24:00 | 21:30:00 | LRM outage: 21:24 granule |
| 2025-113 | April 23, 2025 | 16:30:00 | 16:54:00 | DMU 008 outage: 16:30 - 16:48 (inclusive) |
| 2025-029 | January 29, 2025 | 17:36:00 | 18:00:00 | DMU 007 outage: 17:36 - 17:54 (inclusive) |
| 2025-023 | January 23, 2025 | 19:12:00 | 19:48:00 | Star Tracker outage: 19:12 - 19:42 (inclusive) |
| 2025-009 | January 9, 2025 | 21:18:00 | 21:24:00 | LRM outage: 21:18 granule |
| 2024-346 | December 11, 2024 | 12:00:00 | 12:18:00 | LRM outage: 12:00 - 12:12 (inclusive) |
| 2024-318 | November 13, 2024 | 18:06:00 | 18:36:00 | RTO event outage: 18:06 through 18:30 granules |
| 2024-317 | November 12, 2024 | 04:24:00 | 04:42:00 | LRM outage 04:24, 04:30 and 04:36 granules |
| 2024-304 | October 30, 2024 | 17:36:00 | 18:06:00 | IAM-001 outage 17:36 - 18:00 (inclusive) |
| 2024-282 | October 8, 2024 | 07:36:00 | 08:00:00 | Non-recoverable data gap |
| 2024-255 | September 11, 2024 | 16:30:00 | 16:48:00 | DMU 006 outage: 16:30 - 16:42 (inclusive) |
| 2024-204 | July 22, 2024 | 03:42:00 | 04:00:00 | NOAA-21 RMM on July 22, 2024 |
| 2024-202 | July 20, 2024 | 08:00:00 | 14:00:00 | GPS-Fault Anomaly on 07/20 |
| 2024-174 | June 22, 2024 | 09:36:00 | 12:00:00 | RTA Resent extension to 12:00 per VCST |
| 2024-174 | June 22, 2024 | 04:18:00 | 09:36:00 | RTA Reset :04:18 to 09:30 hidden |
| 2024-143 | May 22, 2024 | 16:30:00 | 16:54:00 | DMU outage: 16:30 - 16:48 (inclusive) |
| 2024-139 | May 18, 2024 | 23:42:00 | 23:54:00 | LRM outage: 23:42 and 23:48 granules |
| 2024-110 | April 19, 2024 | 05:36:00 | 05:48:00 | LRM outage: 05:36 and 05:42 granules |
| 2024-058 - 2024-060 | February 27, 2024 - February 29, 2024 | 21:00:00 | 07:30:00 | MMOG impact on TEB & SWIR Bands |
| 2024-057 - 2024-058 | February 26, 2024 - February 27, 2024 | 16:06:00 | 21:00:00 | MMOG outage (EDOS outage): 2/26/24 16:07 - 2/27/24 21:00 |
| 2024-045 | February 14, 2024 | 17:00:00 | 17:18:00 | DMU outage: 17:00 - 17:12 (inclusive) |
| 2024-024 | January 24, 2024 | 19:54:00 | 20:36:00 | Star Tracker Photo Mode: 19:54 - 20:30 granules |
| 2024-021 | January 21, 2024 | 06:30:00 | 06:54:00 | Lunar Cal outage: 06:30 through 06:48 granules |
| 2023-356 | December 22, 2023 | 17:48:00 | 18:12:00 | Maneuver outage: 17:48 through 18:06 granules |
| 2023-356 | December 22, 2023 | 16:00:00 | 16:06:00 | Maneuver outage: 16:00 granule |
| 2023-327 | November 23, 2023 | 08:36:00 | 09:00:00 | Maneuver outage: 08:36 through 08:54 granules |
| 2023-291 | October 18, 2023 | 17:30:00 | 17:48:00 | DMU outage: 17:30, 17:36 and 17:42 granules |
| 2023-228 | August 16, 2023 | 17:18:00 | 17:36:00 | DMU outage: 17:18, 17:24 and 17:30 granules |
| 2023-151 | May 31, 2023 | 00:24:00 | 00:30:00 | LRM outage: 00:30 granule |
| 2023-121 | May 1, 2023 | 07:48:00 | 08:24:00 | LRM outage: 07:48 through 08:18 granules |
| 2023-116 | April 26, 2023 | 17:18:00 | 17:42:00 | DMU outage: 17:18, 17:24, 17:30 and 17:36 granules |
| 2023-069 | March 10, 2023 | 11:48:00 | 12:00:00 | Yaw Maneuver impact. |
| 2023-061 | March 2, 2023 | 01:24:00 | 01:36:00 | Lunar Cal impact |
| 2023-056 | February 25, 2023 | 08:00:00 | 08:40:00 | MMOG data impact |
| 2023-054 - 2023-056 | February 23, 2023 - February 25, 2023 | 14:24:00 | 08:00:00 | MMOG data impact |
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