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: 7/18/2025
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 14:03:40 70.38, -35.03 49.49 07/18/2025 14:02:29 70.37, -36.55 49.56 56.99 71
2 07/18/2025 14:54:32 -70.81, 131.60 130.05 07/18/2025 14:53:17 -70.81, 131.45 130.04 5.34 75
3 07/18/2025 15:45:19 70.86, -61.17 50.01 07/18/2025 15:44:16 70.86, -61.22 50.02 1.74 63
4 07/18/2025 16:36:03 -70.87, 106.13 129.98 07/18/2025 16:35:12 -70.88, 106.09 129.96 1.94 51
5 07/18/2025 17:26:50 70.92, -86.64 50.08 07/18/2025 17:26:11 70.93, -86.58 50.09 2.62 39
6 07/18/2025 18:17:34 -70.93, 80.66 129.91 07/18/2025 18:17:08 -70.90, 80.64 129.93 2.82 26
7 07/18/2025 19:08:20 70.92,-112.02 50.10 07/18/2025 19:08:07 70.95,-112.02 50.13 2.99 13
8 07/18/2025 19:59:04 -70.93, 55.28 129.89 07/18/2025 19:59:04 -70.92, 55.19 129.90 3.35 0
9 07/18/2025 20:49:51 70.98,-137.49 50.17 07/18/2025 20:50:03 70.97,-137.47 50.16 1.25 12
10 07/18/2025 21:40:34 -70.99, 29.81 129.82 07/18/2025 21:40:58 -70.99, 29.83 129.82 1.03 24
11 07/18/2025 22:31:20 70.98,-162.87 50.19 07/18/2025 22:31:58 70.99,-162.92 50.19 1.86 38
12 07/18/2025 23:22:04 -70.99, 4.43 129.80 07/18/2025 23:22:54 -71.01, 4.38 129.79 2.93 50
13 07/19/2025 00:12:51 71.04, 171.66 50.26 07/19/2025 00:13:54 71.01, 171.63 50.22 3.40 63
14 07/19/2025 01:03:36 -71.10, -21.13 129.67 07/19/2025 01:04:49 -71.08, -20.97 129.71 5.77 73
15 07/19/2025 01:54:31 71.56, 145.37 50.84 07/19/2025 01:55:40 71.54, 147.11 50.73 61.43 69

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 7/18/2025
SNOs_Map_NOAA-21_NOAA-19_20250718.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 07/18/2025 in txt file.

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