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: 4/12/2025
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 23:57:30 -70.81, -4.54 120.75 04/19/2025 23:56:19 -70.82, -6.06 120.67 55.65 71
2 04/20/2025 00:48:25 71.28, 161.98 59.73 04/20/2025 00:47:11 71.26, 161.95 59.73 2.40 74
3 04/20/2025 01:39:09 -71.28, -30.71 120.28 04/20/2025 01:38:07 -71.26, -30.77 120.28 2.73 62
4 04/20/2025 02:29:55 71.28, 136.61 59.71 04/20/2025 02:29:07 71.29, 136.52 59.73 3.38 48
5 04/20/2025 03:20:40 -71.33, -56.17 120.25 04/20/2025 03:20:02 -71.35, -56.11 120.23 2.92 38
6 04/20/2025 04:11:26 71.33, 111.14 59.74 04/20/2025 04:11:03 71.32, 111.09 59.73 2.27 23
7 04/20/2025 05:02:10 -71.33, -81.55 120.27 04/20/2025 05:01:59 -71.33, -81.63 120.27 2.88 11
8 04/20/2025 05:52:57 71.38, 85.67 59.77 04/20/2025 05:52:58 71.40, 85.75 59.78 3.37 1
9 04/20/2025 06:43:41 -71.38,-107.02 120.24 04/20/2025 06:43:54 -71.41,-106.96 120.22 3.16 13
10 04/20/2025 07:34:27 71.38, 60.30 59.75 04/20/2025 07:34:55 71.38, 60.23 59.74 2.52 28
11 04/20/2025 08:25:12 -71.44,-132.48 120.21 04/20/2025 08:25:50 -71.44,-132.39 120.22 3.20 38
12 04/20/2025 09:15:58 71.43, 34.83 59.78 04/20/2025 09:16:51 71.41, 34.80 59.74 3.28 53
13 04/20/2025 10:06:42 -71.44,-157.86 120.24 04/20/2025 10:07:47 -71.42,-157.91 120.26 2.95 65
14 04/20/2025 10:57:32 71.64, 9.08 59.97 04/20/2025 10:58:44 71.59, 9.65 59.89 20.91 72
15 04/20/2025 11:48:23 -72.00, 175.73 119.66 04/20/2025 11:49:32 -72.00, 177.72 119.73 68.37 69

Figure of NOAA-20 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/12/2025
SNOs_Map_NOAA-20_NOAA-19_20250412.jpg

Download SNOs between NOAA-20 and NOAA-19 since TLE EPOCH: 04/12/2025 in txt file.

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