Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and NOAA-19 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 7/23/2025
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (NOAA-19) Time (NOAA-19) Lat,Lon (NOAA-19) SZA (NOAA-19 ) Distance(km) Time Diff (sec)
1 08/03/2025 20:49:40 70.31,-136.42 53.05 08/03/2025 20:48:29 70.30,-137.84 53.12 53.51 71
2 08/03/2025 21:40:31 -70.65, 30.35 126.58 08/03/2025 21:39:17 -70.63, 29.98 126.57 13.87 74
3 08/03/2025 22:31:19 70.79,-162.56 53.58 08/03/2025 22:30:16 70.79,-162.52 53.59 1.48 63
4 08/03/2025 23:22:04 -70.81, 4.71 126.39 08/03/2025 23:21:10 -70.80, 4.79 126.39 3.06 54
5 08/04/2025 00:12:49 70.79, 172.06 53.60 08/04/2025 00:12:12 70.80, 172.03 53.62 1.78 37
6 08/04/2025 01:03:34 -70.82, -20.67 126.37 08/04/2025 01:03:06 -70.82, -20.66 126.36 0.58 28
7 08/04/2025 01:54:20 70.85, 146.59 53.68 08/04/2025 01:54:08 70.82, 146.58 53.66 2.91 12
8 08/04/2025 02:45:04 -70.82, -46.06 126.34 08/04/2025 02:45:02 -70.84, -46.12 126.32 2.94 2
9 08/04/2025 03:35:50 70.85, 121.21 53.70 08/04/2025 03:36:04 70.84, 121.13 53.69 3.22 14
10 08/04/2025 04:26:35 -70.88, -71.52 126.26 08/04/2025 04:26:58 -70.86, -71.57 126.29 2.81 23
11 08/04/2025 05:17:21 70.91, 95.74 53.78 08/04/2025 05:17:59 70.91, 95.76 53.78 1.02 38
12 08/04/2025 06:08:06 -70.94, -96.99 126.18 08/04/2025 06:08:53 -70.93, -96.93 126.20 2.50 47
13 08/04/2025 06:58:51 70.92, 70.35 53.81 08/04/2025 06:59:55 70.93, 70.31 53.81 2.12 64
14 08/04/2025 07:49:36 -70.94,-122.38 126.16 08/04/2025 07:50:49 -70.95,-122.38 126.17 0.61 73
15 08/04/2025 08:40:32 71.49, 43.98 54.45 08/04/2025 08:41:41 71.46, 45.78 54.33 63.75 69

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 7/23/2025
SNOs_Map_NOAA-21_NOAA-19_20250723.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 07/23/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and NOAA-19