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: 4/8/2025
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 -70.80, -6.10 120.69 55.82 71
2 04/20/2025 00:48:26 71.30, 161.94 59.76 04/20/2025 00:47:11 71.28, 162.00 59.75 2.66 75
3 04/20/2025 01:39:10 -71.30, -30.74 120.26 04/20/2025 01:38:07 -71.29, -30.71 120.25 1.06 63
4 04/20/2025 02:29:56 71.30, 136.57 59.73 04/20/2025 02:29:07 71.31, 136.57 59.75 1.56 49
5 04/20/2025 03:20:40 -71.30, -56.12 120.28 04/20/2025 03:20:03 -71.33, -56.14 120.25 3.09 37
6 04/20/2025 04:11:27 71.35, 111.10 59.76 04/20/2025 04:11:03 71.34, 111.14 59.76 1.69 24
7 04/20/2025 05:02:11 -71.35, -81.58 120.25 04/20/2025 05:01:59 -71.36, -81.57 120.25 0.67 12
8 04/20/2025 05:52:57 71.35, 85.72 59.74 04/20/2025 05:52:59 71.37, 85.71 59.76 2.37 2
9 04/20/2025 06:43:42 -71.40,-107.05 120.22 04/20/2025 06:43:55 -71.39,-107.00 120.24 2.55 13
10 04/20/2025 07:34:28 71.40, 60.26 59.77 04/20/2025 07:34:55 71.40, 60.28 59.77 0.83 27
11 04/20/2025 08:25:12 -71.40,-132.42 120.25 04/20/2025 08:25:51 -71.42,-132.43 120.24 1.48 39
12 04/20/2025 09:15:58 71.41, 34.88 59.75 04/20/2025 09:16:51 71.43, 34.85 59.77 3.25 53
13 04/20/2025 10:06:43 -71.46,-157.89 120.22 04/20/2025 10:07:47 -71.45,-157.86 120.23 1.54 64
14 04/20/2025 10:57:32 71.61, 9.13 59.94 04/20/2025 10:58:45 71.56, 9.61 59.87 17.58 73
15 04/20/2025 11:48:24 -72.02, 175.69 119.64 04/20/2025 11:49:33 -71.98, 177.68 119.75 68.39 69

Figure of NOAA-20 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/8/2025
SNOs_Map_NOAA-20_NOAA-19_20250408.jpg

Download SNOs between NOAA-20 and NOAA-19 since TLE EPOCH: 04/08/2025 in txt file.

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