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: 7/8/2025
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 70.35, -34.97 49.45 07/18/2025 14:02:29 70.36, -36.56 49.55 59.51 70
2 07/18/2025 14:54:32 -70.82, 131.58 130.05 07/18/2025 14:53:17 -70.81, 131.45 130.04 4.83 75
3 07/18/2025 15:45:19 70.88, -61.20 50.03 07/18/2025 15:44:15 70.90, -61.14 50.06 3.25 64
4 07/18/2025 16:36:03 -70.88, 106.11 129.97 07/18/2025 16:35:12 -70.88, 106.09 129.96 1.04 51
5 07/18/2025 17:26:50 70.94, -86.67 50.10 07/18/2025 17:26:11 70.92, -86.59 50.09 3.41 39
6 07/18/2025 18:17:34 -70.93, 80.65 129.90 07/18/2025 18:17:08 -70.90, 80.64 129.93 3.38 26
7 07/18/2025 19:08:20 70.94,-112.05 50.12 07/18/2025 19:08:07 70.94,-112.04 50.12 0.61 13
8 07/18/2025 19:59:04 -70.94, 55.27 129.88 07/18/2025 19:59:04 -70.92, 55.19 129.90 3.05 0
9 07/18/2025 20:49:50 70.94,-137.44 50.13 07/18/2025 20:50:03 70.96,-137.49 50.15 2.68 13
10 07/18/2025 21:40:35 -70.99, 29.80 129.81 07/18/2025 21:40:59 -70.99, 29.84 129.82 1.40 24
11 07/18/2025 22:31:21 71.00,-162.91 50.21 07/18/2025 22:31:59 70.98,-162.93 50.18 2.28 38
12 07/18/2025 23:22:05 -71.00, 4.42 129.79 07/18/2025 23:22:55 -71.01, 4.39 129.79 2.09 50
13 07/19/2025 00:12:52 71.06, 171.62 50.28 07/19/2025 00:13:54 71.05, 171.71 50.26 3.07 62
14 07/19/2025 01:03:37 -71.11, -21.14 129.67 07/19/2025 01:04:50 -71.08, -20.97 129.71 6.56 73
15 07/19/2025 01:54:32 71.58, 145.33 50.86 07/19/2025 01:55:41 71.54, 147.10 50.72 62.27 69

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 7/8/2025
SNOs_Map_NOAA-21_NOAA-19_20250709.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 07/08/2025 in txt file.

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