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: 4/11/2025
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 04/19/2025 23:57:31 -70.83, -4.57 120.73 04/19/2025 23:56:20 -70.81, -6.09 120.68 55.45 71
2 04/20/2025 00:48:26 71.30, 161.95 59.75 04/20/2025 00:47:11 71.29, 162.01 59.76 2.37 75
3 04/20/2025 01:39:10 -71.30, -30.74 120.26 04/20/2025 01:38:07 -71.30, -30.70 120.25 1.36 63
4 04/20/2025 02:29:56 71.30, 136.57 59.73 04/20/2025 02:29:07 71.32, 136.58 59.76 2.91 49
5 04/20/2025 03:20:41 -71.35, -56.21 120.23 04/20/2025 03:20:03 -71.33, -56.13 120.24 3.39 38
6 04/20/2025 04:11:27 71.35, 111.10 59.76 04/20/2025 04:11:03 71.35, 111.15 59.77 1.75 24
7 04/20/2025 05:02:11 -71.35, -81.58 120.25 04/20/2025 05:01:59 -71.36, -81.56 120.24 1.41 12
8 04/20/2025 05:52:57 71.35, 85.73 59.74 04/20/2025 05:52:59 71.38, 85.72 59.77 3.58 2
9 04/20/2025 06:43:42 -71.40,-107.05 120.22 04/20/2025 06:43:55 -71.39,-106.99 120.24 2.43 13
10 04/20/2025 07:34:27 71.40, 60.26 59.77 04/20/2025 07:34:54 71.41, 60.29 59.77 1.54 27
11 04/20/2025 08:25:11 -71.40,-132.42 120.25 04/20/2025 08:25:50 -71.42,-132.42 120.23 2.08 39
12 04/20/2025 09:15:58 71.45, 34.79 59.80 04/20/2025 09:16:50 71.44, 34.86 59.78 2.91 52
13 04/20/2025 10:06:42 -71.46,-157.89 120.21 04/20/2025 10:07:46 -71.45,-157.85 120.23 1.61 64
14 04/20/2025 10:57:31 71.61, 9.14 59.94 04/20/2025 10:58:44 71.57, 9.63 59.88 17.59 73
15 04/20/2025 11:48:23 -72.02, 175.69 119.64 04/20/2025 11:49:32 -71.99, 177.69 119.75 68.72 69

Figure of NOAA-20 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/11/2025
SNOs_Map_NOAA-20_NOAA-19_20250411.jpg

Download SNOs between NOAA-20 and NOAA-19 since TLE EPOCH: 04/11/2025 in txt file.

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