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: 7/5/2025
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, -34.98 49.45 07/18/2025 14:02:29 70.34, -36.60 49.54 60.41 70
2 07/18/2025 14:54:32 -70.82, 131.58 130.05 07/18/2025 14:53:17 -70.80, 131.43 130.05 6.32 75
3 07/18/2025 15:45:19 70.88, -61.21 50.03 07/18/2025 15:44:15 70.88, -61.18 50.04 1.32 64
4 07/18/2025 16:36:03 -70.88, 106.11 129.97 07/18/2025 16:35:12 -70.87, 106.07 129.97 2.07 51
5 07/18/2025 17:26:49 70.89, -86.59 50.05 07/18/2025 17:26:11 70.90, -86.62 50.07 1.98 38
6 07/18/2025 18:17:34 -70.93, 80.65 129.90 07/18/2025 18:17:07 -70.94, 80.70 129.89 2.24 27
7 07/18/2025 19:08:20 70.94,-112.06 50.12 07/18/2025 19:08:07 70.92,-112.07 50.10 2.41 13
8 07/18/2025 19:59:04 -70.94, 55.26 129.89 07/18/2025 19:59:03 -70.96, 55.26 129.86 2.42 1
9 07/18/2025 20:49:50 70.95,-137.44 50.14 07/18/2025 20:50:03 70.94,-137.52 50.13 2.83 13
10 07/18/2025 21:40:35 -70.99, 29.80 129.81 07/18/2025 21:40:59 -70.98, 29.81 129.83 1.69 24
11 07/18/2025 22:31:21 71.00,-162.91 50.21 07/18/2025 22:31:58 71.01,-162.88 50.21 1.70 37
12 07/18/2025 23:22:05 -71.00, 4.41 129.80 07/18/2025 23:22:55 -71.00, 4.36 129.80 2.08 50
13 07/19/2025 00:12:51 71.01, 171.71 50.23 07/19/2025 00:13:54 71.03, 171.67 50.24 3.12 63
14 07/19/2025 01:03:36 -71.05, -21.05 129.72 07/19/2025 01:04:50 -71.07, -21.00 129.72 2.61 74
15 07/19/2025 01:54:31 71.53, 145.42 50.80 07/19/2025 01:55:41 71.52, 147.06 50.70 57.92 70

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 7/5/2025
SNOs_Map_NOAA-21_NOAA-19_20250705.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 07/05/2025 in txt file.

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