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: 4/7/2025
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 -70.79, -4.50 120.78 04/19/2025 23:56:20 -70.79, -6.11 120.70 59.08 70
2 04/20/2025 00:48:25 71.26, 162.02 59.71 04/20/2025 00:47:11 71.27, 161.98 59.74 2.23 74
3 04/20/2025 01:39:10 -71.31, -30.76 120.25 04/20/2025 01:38:07 -71.28, -30.73 120.26 2.63 63
4 04/20/2025 02:29:56 71.31, 136.55 59.74 04/20/2025 02:29:07 71.30, 136.55 59.74 0.72 49
5 04/20/2025 03:20:40 -71.31, -56.13 120.28 04/20/2025 03:20:03 -71.31, -56.16 120.26 1.34 37
6 04/20/2025 04:11:26 71.31, 111.17 59.72 04/20/2025 04:11:03 71.33, 111.12 59.75 3.18 23
7 04/20/2025 05:02:11 -71.36, -81.60 120.24 04/20/2025 05:01:59 -71.35, -81.59 120.26 1.61 12
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 0.62 2
9 04/20/2025 06:43:41 -71.36,-106.97 120.27 04/20/2025 06:43:55 -71.38,-107.02 120.25 2.37 14
10 04/20/2025 07:34:28 71.41, 60.24 59.78 04/20/2025 07:34:55 71.39, 60.26 59.75 2.65 27
11 04/20/2025 08:25:12 -71.41,-132.44 120.24 04/20/2025 08:25:51 -71.41,-132.45 120.25 0.76 39
12 04/20/2025 09:15:58 71.42, 34.86 59.76 04/20/2025 09:16:51 71.42, 34.83 59.76 1.38 53
13 04/20/2025 10:06:43 -71.46,-157.91 120.21 04/20/2025 10:07:47 -71.44,-157.88 120.24 3.33 64
14 04/20/2025 10:57:32 71.62, 9.12 59.96 04/20/2025 10:58:45 71.55, 9.59 59.86 18.37 73
15 04/20/2025 11:48:24 -72.03, 175.68 119.63 04/20/2025 11:49:33 -71.97, 177.66 119.76 68.44 69

Figure of NOAA-20 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/7/2025
SNOs_Map_NOAA-20_NOAA-19_20250407.jpg

Download SNOs between NOAA-20 and NOAA-19 since TLE EPOCH: 04/07/2025 in txt file.

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