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: 5/11/2025
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 05/22/2025 10:06:57 -70.69,-156.68 129.84 05/22/2025 10:05:46 -70.66,-158.04 129.80 50.22 71
2 05/22/2025 10:57:47 70.92, 10.25 50.40 05/22/2025 10:56:34 70.90, 9.64 50.42 22.09 73
3 05/22/2025 11:48:35 -71.11, 177.24 129.41 05/22/2025 11:47:34 -71.10, 177.23 129.41 1.15 61
4 05/22/2025 12:39:21 71.13, -15.49 50.61 05/22/2025 12:38:26 71.13, -15.43 50.62 1.89 55
5 05/22/2025 13:30:05 -71.11, 151.87 129.42 05/22/2025 13:29:30 -71.13, 151.79 129.40 3.09 35
6 05/22/2025 14:20:51 71.14, -40.86 50.60 05/22/2025 14:20:22 71.16, -40.87 50.63 2.41 29
7 05/22/2025 15:11:36 -71.17, 126.40 129.38 05/22/2025 15:11:26 -71.15, 126.35 129.39 2.31 10
8 05/22/2025 16:02:22 71.19, -66.33 50.65 05/22/2025 16:02:18 71.18, -66.31 50.64 1.24 4
9 05/22/2025 16:53:07 -71.22, 100.93 129.33 05/22/2025 16:53:21 -71.23, 101.01 129.33 2.91 14
10 05/22/2025 17:43:52 71.19, -91.71 50.64 05/22/2025 17:44:14 71.21, -91.75 50.65 2.03 22
11 05/22/2025 18:34:37 -71.22, 75.55 129.34 05/22/2025 18:35:17 -71.25, 75.57 129.32 3.39 40
12 05/22/2025 19:25:23 71.25,-117.18 50.68 05/22/2025 19:26:10 71.23,-117.19 50.66 1.75 47
13 05/22/2025 20:16:08 -71.28, 50.08 129.30 05/22/2025 20:17:13 -71.28, 50.13 129.31 1.85 65
14 05/22/2025 21:06:53 71.25,-142.56 50.67 05/22/2025 21:08:06 71.26,-142.63 50.67 2.39 73
15 05/22/2025 21:57:50 -71.90, 23.58 128.65 05/22/2025 21:58:58 -71.86, 25.74 128.77 74.75 68

Figure of NOAA-20 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 5/11/2025
SNOs_Map_NOAA-20_NOAA-19_20250511.jpg

Download SNOs between NOAA-20 and NOAA-19 since TLE EPOCH: 05/11/2025 in txt file.

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