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: 4/13/2025
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 -70.80, -4.52 120.76 04/19/2025 23:56:20 -70.78, -6.13 120.70 58.88 70
2 04/20/2025 00:48:25 71.26, 162.00 59.72 04/20/2025 00:47:11 71.27, 161.97 59.74 1.21 74
3 04/20/2025 01:39:09 -71.27, -30.69 120.29 04/20/2025 01:38:07 -71.28, -30.75 120.27 2.20 62
4 04/20/2025 02:29:56 71.32, 136.53 59.75 04/20/2025 02:29:07 71.30, 136.54 59.74 2.15 49
5 04/20/2025 03:20:40 -71.32, -56.16 120.26 04/20/2025 03:20:03 -71.31, -56.18 120.27 2.00 37
6 04/20/2025 04:11:26 71.32, 111.16 59.73 04/20/2025 04:11:03 71.33, 111.11 59.74 2.10 23
7 04/20/2025 05:02:10 -71.32, -81.53 120.28 04/20/2025 05:01:59 -71.34, -81.61 120.27 3.10 11
8 04/20/2025 05:52:57 71.37, 85.69 59.76 04/20/2025 05:52:59 71.36, 85.68 59.75 1.50 2
9 04/20/2025 06:43:41 -71.37,-107.00 120.25 04/20/2025 06:43:55 -71.37,-107.04 120.26 1.67 14
10 04/20/2025 07:34:27 71.37, 60.32 59.74 04/20/2025 07:34:55 71.39, 60.25 59.75 3.00 28
11 04/20/2025 08:25:12 -71.43,-132.47 120.22 04/20/2025 08:25:51 -71.40,-132.47 120.26 3.36 39
12 04/20/2025 09:15:58 71.42, 34.85 59.77 04/20/2025 09:16:51 71.42, 34.82 59.75 1.26 53
13 04/20/2025 10:06:42 -71.43,-157.84 120.25 04/20/2025 10:07:47 -71.43,-157.90 120.25 1.91 65
14 04/20/2025 10:57:32 71.63, 9.10 59.96 04/20/2025 10:58:44 71.60, 9.67 59.90 20.45 72
15 04/20/2025 11:48:24 -72.04, 175.65 119.61 04/20/2025 11:49:33 -71.96, 177.64 119.77 68.99 69

Figure of NOAA-20 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/13/2025
SNOs_Map_NOAA-20_NOAA-19_20250413.jpg

Download SNOs between NOAA-20 and NOAA-19 since TLE EPOCH: 04/13/2025 in txt file.

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