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: 5/17/2025
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,-156.68 129.83 05/22/2025 10:05:46 -70.67,-158.03 129.80 49.60 71
2 05/22/2025 10:57:47 70.92, 10.25 50.40 05/22/2025 10:56:34 70.91, 9.67 50.43 21.43 73
3 05/22/2025 11:48:35 -71.11, 177.24 129.40 05/22/2025 11:47:34 -71.11, 177.24 129.40 0.68 61
4 05/22/2025 12:39:21 71.13, -15.48 50.61 05/22/2025 12:38:26 71.14, -15.41 50.63 2.95 55
5 05/22/2025 13:30:05 -71.12, 151.86 129.42 05/22/2025 13:29:30 -71.13, 151.80 129.39 2.77 35
6 05/22/2025 14:20:51 71.13, -40.86 50.60 05/22/2025 14:20:23 71.12, -40.94 50.59 3.40 28
7 05/22/2025 15:11:36 -71.17, 126.39 129.37 05/22/2025 15:11:26 -71.16, 126.37 129.38 1.70 10
8 05/22/2025 16:02:22 71.19, -66.33 50.64 05/22/2025 16:02:18 71.19, -66.29 50.65 1.60 4
9 05/22/2025 16:53:06 -71.17, 101.01 129.38 05/22/2025 16:53:22 -71.18, 100.93 129.37 3.26 16
10 05/22/2025 17:43:52 71.19, -91.71 50.63 05/22/2025 17:44:14 71.22, -91.73 50.66 3.29 22
11 05/22/2025 18:34:37 -71.23, 75.54 129.34 05/22/2025 18:35:18 -71.21, 75.49 129.36 2.89 41
12 05/22/2025 19:25:23 71.25,-117.18 50.68 05/22/2025 19:26:10 71.24,-117.17 50.67 0.43 47
13 05/22/2025 20:16:08 -71.28, 50.07 129.29 05/22/2025 20:17:13 -71.29, 50.14 129.30 2.51 65
14 05/22/2025 21:06:53 71.25,-142.56 50.67 05/22/2025 21:08:06 71.27,-142.60 50.68 2.87 73
15 05/22/2025 21:57:50 -71.90, 23.57 128.65 05/22/2025 21:58:58 -71.87, 25.75 128.76 75.39 68

Figure of NOAA-20 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 5/17/2025
SNOs_Map_NOAA-20_NOAA-19_20250517.jpg

Download SNOs between NOAA-20 and NOAA-19 since TLE EPOCH: 05/17/2025 in txt file.

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