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: 4/17/2025
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 04/19/2025 23:57:30 -70.81, -4.53 120.75 04/19/2025 23:56:20 -70.77, -6.15 120.71 59.26 70
2 04/20/2025 00:48:25 71.26, 162.00 59.72 04/20/2025 00:47:11 71.26, 161.96 59.73 1.54 74
3 04/20/2025 01:39:09 -71.27, -30.70 120.29 04/20/2025 01:38:07 -71.27, -30.77 120.28 2.59 62
4 04/20/2025 02:29:56 71.32, 136.53 59.75 04/20/2025 02:29:07 71.29, 136.53 59.74 2.76 49
5 04/20/2025 03:20:40 -71.33, -56.17 120.26 04/20/2025 03:20:02 -71.35, -56.10 120.23 3.20 38
6 04/20/2025 04:11:26 71.32, 111.16 59.73 04/20/2025 04:11:03 71.32, 111.10 59.74 2.23 23
7 04/20/2025 05:02:10 -71.33, -81.54 120.28 04/20/2025 05:01:59 -71.33, -81.63 120.27 3.04 11
8 04/20/2025 05:52:57 71.37, 85.69 59.76 04/20/2025 05:52:59 71.35, 85.67 59.74 2.19 2
9 04/20/2025 06:43:41 -71.38,-107.01 120.25 04/20/2025 06:43:55 -71.36,-107.06 120.27 2.95 14
10 04/20/2025 07:34:27 71.37, 60.32 59.74 04/20/2025 07:34:55 71.38, 60.24 59.75 3.03 28
11 04/20/2025 08:25:12 -71.43,-132.47 120.22 04/20/2025 08:25:50 -71.44,-132.39 120.22 3.07 38
12 04/20/2025 09:15:58 71.42, 34.85 59.77 04/20/2025 09:16:51 71.41, 34.81 59.75 1.94 53
13 04/20/2025 10:06:42 -71.43,-157.85 120.24 04/20/2025 10:07:47 -71.42,-157.91 120.26 2.71 65
14 04/20/2025 10:57:32 71.63, 9.10 59.96 04/20/2025 10:58:44 71.59, 9.66 59.90 20.16 72
15 04/20/2025 11:48:24 -72.05, 175.64 119.61 04/20/2025 11:49:32 -72.00, 177.72 119.73 71.52 68

Figure of NOAA-20 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/17/2025
SNOs_Map_NOAA-20_NOAA-19_20250417.jpg

Download SNOs between NOAA-20 and NOAA-19 since TLE EPOCH: 04/17/2025 in txt file.

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