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: 4/19/2025
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 -70.80, -4.52 120.76 04/19/2025 23:56:20 -70.78, -6.13 120.70 59.05 70
2 04/20/2025 00:48:25 71.26, 162.01 59.71 04/20/2025 00:47:11 71.27, 161.98 59.74 2.39 74
3 04/20/2025 01:39:09 -71.27, -30.69 120.29 04/20/2025 01:38:07 -71.27, -30.75 120.27 2.41 62
4 04/20/2025 02:29:56 71.31, 136.55 59.74 04/20/2025 02:29:07 71.30, 136.55 59.75 0.54 49
5 04/20/2025 03:20:40 -71.32, -56.15 120.26 04/20/2025 03:20:03 -71.31, -56.18 120.27 1.89 37
6 04/20/2025 04:11:27 71.36, 111.08 59.77 04/20/2025 04:11:03 71.33, 111.12 59.75 3.29 24
7 04/20/2025 05:02:10 -71.32, -81.53 120.29 04/20/2025 05:01:59 -71.34, -81.61 120.27 3.36 11
8 04/20/2025 05:52:57 71.36, 85.71 59.75 04/20/2025 05:52:59 71.36, 85.69 59.75 0.71 2
9 04/20/2025 06:43:41 -71.37,-107.00 120.25 04/20/2025 06:43:55 -71.37,-107.04 120.26 1.67 14
10 04/20/2025 07:34:28 71.41, 60.24 59.78 04/20/2025 07:34:55 71.39, 60.26 59.76 2.36 27
11 04/20/2025 08:25:12 -71.42,-132.46 120.22 04/20/2025 08:25:51 -71.40,-132.47 120.26 3.07 39
12 04/20/2025 09:15:58 71.41, 34.86 59.76 04/20/2025 09:16:51 71.42, 34.83 59.76 1.59 53
13 04/20/2025 10:06:42 -71.42,-157.84 120.25 04/20/2025 10:07:47 -71.43,-157.90 120.25 2.08 65
14 04/20/2025 10:57:32 71.62, 9.12 59.95 04/20/2025 10:58:45 71.56, 9.59 59.86 18.19 73
15 04/20/2025 11:48:24 -72.04, 175.65 119.61 04/20/2025 11:49:33 -71.96, 177.64 119.77 68.79 69

Figure of NOAA-20 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/19/2025
SNOs_Map_NOAA-20_NOAA-19_20250419.jpg

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

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