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: 7/24/2025
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 70.27,-136.36 53.01 08/03/2025 20:48:30 70.29,-137.87 53.11 56.43 70
2 08/03/2025 21:40:32 -70.67, 30.32 126.56 08/03/2025 21:39:17 -70.67, 30.04 126.54 10.19 75
3 08/03/2025 22:31:19 70.75,-162.50 53.54 08/03/2025 22:30:17 70.77,-162.54 53.57 2.73 62
4 08/03/2025 23:22:03 -70.78, 4.76 126.42 08/03/2025 23:21:10 -70.79, 4.76 126.40 1.17 53
5 08/04/2025 00:12:49 70.81, 172.03 53.62 08/04/2025 00:12:12 70.79, 172.01 53.61 2.13 37
6 08/04/2025 01:03:34 -70.84, -20.70 126.35 08/04/2025 01:03:06 -70.81, -20.69 126.37 3.18 28
7 08/04/2025 01:54:20 70.87, 146.56 53.70 08/04/2025 01:54:07 70.86, 146.64 53.69 3.17 13
8 08/04/2025 02:45:04 -70.84, -46.09 126.32 08/04/2025 02:45:02 -70.83, -46.14 126.33 2.51 2
9 08/04/2025 03:35:50 70.87, 121.18 53.72 08/04/2025 03:36:03 70.88, 121.19 53.73 1.14 13
10 08/04/2025 04:26:35 -70.90, -71.56 126.24 08/04/2025 04:26:57 -70.90, -71.50 126.25 1.96 22
11 08/04/2025 05:17:20 70.88, 95.79 53.75 08/04/2025 05:17:59 70.90, 95.74 53.76 3.09 39
12 08/04/2025 06:08:05 -70.90, -96.94 126.22 08/04/2025 06:08:53 -70.92, -96.95 126.21 1.44 48
13 08/04/2025 06:58:51 70.93, 70.32 53.83 08/04/2025 06:59:55 70.92, 70.29 53.80 2.21 64
14 08/04/2025 07:49:36 -70.96,-122.41 126.14 08/04/2025 07:50:49 -70.93,-122.40 126.18 2.97 73
15 08/04/2025 08:40:32 71.51, 43.95 54.46 08/04/2025 08:41:41 71.45, 45.76 54.32 64.31 69

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 7/24/2025
SNOs_Map_NOAA-21_NOAA-19_20250724.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 07/24/2025 in txt file.

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