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: 7/14/2025
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 07/18/2025 14:03:39 70.36, -34.99 49.46 07/18/2025 14:02:29 70.34, -36.60 49.53 60.13 70
2 07/18/2025 14:54:31 -70.79, 131.64 130.08 07/18/2025 14:53:17 -70.79, 131.41 130.06 8.43 74
3 07/18/2025 15:45:19 70.89, -61.22 50.04 07/18/2025 15:44:15 70.88, -61.18 50.04 2.04 64
4 07/18/2025 16:36:03 -70.90, 106.09 129.96 07/18/2025 16:35:11 -70.91, 106.14 129.93 2.47 52
5 07/18/2025 17:26:49 70.90, -86.60 50.05 07/18/2025 17:26:11 70.90, -86.63 50.07 0.97 38
6 07/18/2025 18:17:33 -70.90, 80.71 129.94 07/18/2025 18:17:07 -70.93, 80.69 129.90 3.39 26
7 07/18/2025 19:08:20 70.95,-112.07 50.13 07/18/2025 19:08:07 70.92,-112.07 50.10 3.45 13
8 07/18/2025 19:59:04 -70.96, 55.24 129.87 07/18/2025 19:59:03 -70.95, 55.24 129.87 0.72 1
9 07/18/2025 20:49:50 70.96,-137.46 50.15 07/18/2025 20:50:03 70.94,-137.52 50.13 2.94 13
10 07/18/2025 21:40:34 -70.96, 29.86 129.85 07/18/2025 21:40:59 -70.97, 29.79 129.84 2.56 25
11 07/18/2025 22:31:21 71.01,-162.92 50.22 07/18/2025 22:31:58 71.01,-162.88 50.21 1.62 37
12 07/18/2025 23:22:05 -71.02, 4.39 129.78 07/18/2025 23:22:54 -71.04, 4.43 129.76 3.15 49
13 07/19/2025 00:12:51 71.02, 171.69 50.24 07/19/2025 00:13:54 71.03, 171.67 50.24 1.99 63
14 07/19/2025 01:03:36 -71.07, -21.08 129.70 07/19/2025 01:04:50 -71.06, -21.02 129.73 2.74 74
15 07/19/2025 01:54:31 71.54, 145.41 50.81 07/19/2025 01:55:41 71.51, 147.06 50.70 58.32 70

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 7/14/2025
SNOs_Map_NOAA-21_NOAA-19_20250714.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 07/14/2025 in txt file.

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