Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-20 and NOAA-19 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 7/21/2025
Index Date (NOAA-20) Time (NOAA-20) Lat,Lon (NOAA-20) SZA (NOAA-20 ) Date (NOAA-19) Time (NOAA-19) Lat,Lon (NOAA-19) SZA (NOAA-19 ) Distance(km) Time Diff (sec)
1 07/26/2025 13:11:48 -70.23, 157.90 129.06 07/26/2025 13:10:38 -70.22, 156.34 128.97 58.63 70
2 07/26/2025 14:02:44 70.73, -35.59 51.48 07/26/2025 14:01:30 70.70, -35.62 51.48 2.99 74
3 07/26/2025 14:53:28 -70.76, 131.68 128.48 07/26/2025 14:52:24 -70.76, 131.75 128.47 2.54 64
4 07/26/2025 15:44:15 70.79, -61.06 51.56 07/26/2025 15:43:25 70.78, -60.98 51.56 3.14 50
5 07/26/2025 16:34:58 -70.76, 106.30 128.46 07/26/2025 16:34:20 -70.78, 106.30 128.44 1.95 38
6 07/26/2025 17:25:45 70.79, -86.44 51.58 07/26/2025 17:25:21 70.80, -86.43 51.59 0.55 24
7 07/26/2025 18:16:29 -70.82, 80.83 128.38 07/26/2025 18:16:16 -70.80, 80.85 128.40 2.36 13
8 07/26/2025 19:07:15 70.80,-111.83 51.60 07/26/2025 19:07:17 70.82,-111.88 51.62 2.86 2
9 07/26/2025 19:57:59 -70.83, 55.45 128.36 07/26/2025 19:58:12 -70.82, 55.40 128.37 1.96 13
10 07/26/2025 20:48:46 70.85,-137.30 51.68 07/26/2025 20:49:13 70.83,-137.33 51.66 2.57 27
11 07/26/2025 21:39:30 -70.88, 29.98 128.29 07/26/2025 21:40:07 -70.89, 30.03 128.29 2.24 37
12 07/26/2025 22:30:17 70.91,-162.77 51.76 07/26/2025 22:31:08 70.91,-162.69 51.74 2.73 51
13 07/26/2025 23:21:00 -70.89, 4.59 128.26 07/26/2025 23:22:03 -70.91, 4.58 128.25 2.46 63
14 07/27/2025 00:11:49 71.02, 171.68 51.89 07/27/2025 00:13:03 70.98, 171.95 51.82 11.00 74
15 07/27/2025 01:02:40 -71.41, -21.68 127.69 07/27/2025 01:03:50 -71.39, -20.04 127.79 58.10 70

Figure of NOAA-20 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 7/21/2025
SNOs_Map_NOAA-20_NOAA-19_20250721.jpg

Download SNOs between NOAA-20 and NOAA-19 since TLE EPOCH: 07/21/2025 in txt file.

Historial Predications of SNOs between NOAA-20 and NOAA-19