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: 4/15/2025
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, -4.51 120.77 04/19/2025 23:56:20 -70.78, -6.14 120.71 59.35 70
2 04/20/2025 00:48:25 71.26, 162.01 59.71 04/20/2025 00:47:11 71.27, 161.97 59.74 2.06 74
3 04/20/2025 01:39:09 -71.26, -30.68 120.30 04/20/2025 01:38:07 -71.27, -30.76 120.27 2.79 62
4 04/20/2025 02:29:56 71.31, 136.55 59.74 04/20/2025 02:29:07 71.30, 136.54 59.74 1.32 49
5 04/20/2025 03:20:40 -71.32, -56.15 120.27 04/20/2025 03:20:03 -71.30, -56.18 120.27 1.91 37
6 04/20/2025 04:11:26 71.31, 111.17 59.72 04/20/2025 04:11:03 71.33, 111.11 59.74 3.03 23
7 04/20/2025 05:02:10 -71.32, -81.52 120.29 04/20/2025 05:01:59 -71.33, -81.61 120.27 3.75 11
8 04/20/2025 05:52:57 71.36, 85.70 59.75 04/20/2025 05:52:59 71.36, 85.68 59.75 1.12 2
9 04/20/2025 06:43:41 -71.37,-106.99 120.26 04/20/2025 06:43:55 -71.36,-107.04 120.26 1.95 14
10 04/20/2025 07:34:28 71.41, 60.24 59.78 04/20/2025 07:34:55 71.39, 60.25 59.75 3.09 27
11 04/20/2025 08:25:12 -71.42,-132.46 120.23 04/20/2025 08:25:51 -71.39,-132.47 120.26 2.96 39
12 04/20/2025 09:15:58 71.42, 34.86 59.76 04/20/2025 09:16:51 71.42, 34.82 59.75 1.57 53
13 04/20/2025 10:06:42 -71.42,-157.83 120.25 04/20/2025 10:07:47 -71.42,-157.90 120.26 2.47 65
14 04/20/2025 10:57:32 71.62, 9.11 59.96 04/20/2025 10:58:45 71.55, 9.58 59.85 18.25 73
15 04/20/2025 11:48:24 -72.04, 175.66 119.62 04/20/2025 11:49:33 -71.96, 177.63 119.77 68.40 69

Figure of NOAA-20 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/15/2025
SNOs_Map_NOAA-20_NOAA-19_20250415.jpg

Download SNOs between NOAA-20 and NOAA-19 since TLE EPOCH: 04/15/2025 in txt file.

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