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: 7/27/2025
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 70.29,-136.39 53.03 08/03/2025 20:48:30 70.26,-137.91 53.08 57.22 70
2 08/03/2025 21:40:31 -70.64, 30.37 126.59 08/03/2025 21:39:17 -70.64, 29.99 126.56 13.96 74
3 08/03/2025 22:31:19 70.77,-162.53 53.56 08/03/2025 22:30:16 70.79,-162.50 53.59 2.89 63
4 08/03/2025 23:22:04 -70.80, 4.73 126.40 08/03/2025 23:21:10 -70.81, 4.80 126.39 2.70 54
5 08/04/2025 00:12:50 70.83, 172.00 53.64 08/04/2025 00:12:12 70.81, 172.05 53.63 2.44 38
6 08/04/2025 01:03:34 -70.81, -20.65 126.38 08/04/2025 01:03:06 -70.83, -20.65 126.35 2.25 28
7 08/04/2025 01:54:20 70.83, 146.61 53.66 08/04/2025 01:54:08 70.83, 146.59 53.67 0.78 12
8 08/04/2025 02:45:05 -70.87, -46.12 126.30 08/04/2025 02:45:02 -70.85, -46.10 126.32 2.17 3
9 08/04/2025 03:35:51 70.89, 121.15 53.74 08/04/2025 03:36:03 70.90, 121.23 53.75 3.38 12
10 08/04/2025 04:26:35 -70.87, -71.51 126.27 08/04/2025 04:26:58 -70.86, -71.56 126.28 1.94 23
11 08/04/2025 05:17:21 70.90, 95.76 53.77 08/04/2025 05:17:59 70.92, 95.78 53.78 2.78 38
12 08/04/2025 06:08:06 -70.93, -96.98 126.19 08/04/2025 06:08:53 -70.93, -96.92 126.20 2.20 47
13 08/04/2025 06:58:52 70.95, 70.29 53.85 08/04/2025 06:59:55 70.94, 70.33 53.82 2.11 63
14 08/04/2025 07:49:36 -70.93,-122.36 126.17 08/04/2025 07:50:49 -70.95,-122.37 126.16 2.37 73
15 08/04/2025 08:40:32 71.48, 44.01 54.43 08/04/2025 08:41:41 71.47, 45.80 54.34 63.28 69

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 7/27/2025
SNOs_Map_NOAA-21_NOAA-19_20250727.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 07/27/2025 in txt file.

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