Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and NOAA-19 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/19/2025
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (NOAA-19) Time (NOAA-19) Lat,Lon (NOAA-19) SZA (NOAA-19 ) Distance(km) Time Diff (sec)
1 04/28/2025 06:44:46 -70.77,-105.87 123.54 04/28/2025 06:43:37 -70.77,-107.81 123.46 71.14 69
2 04/28/2025 07:35:40 71.22, 60.69 56.92 04/28/2025 07:34:27 71.20, 60.21 56.94 17.31 73
3 04/28/2025 08:26:27 -71.35,-132.24 122.95 04/28/2025 08:25:22 -71.36,-132.25 122.93 1.07 65
4 04/28/2025 09:17:13 71.39, 35.02 57.08 04/28/2025 09:16:20 71.39, 35.05 57.09 1.23 53
5 04/28/2025 10:07:57 -71.37,-157.63 122.96 04/28/2025 10:07:18 -71.39,-157.68 122.92 3.27 39
6 04/28/2025 10:58:43 71.40, 9.62 57.07 04/28/2025 10:58:16 71.42, 9.62 57.09 1.93 27
7 04/28/2025 11:49:28 -71.43, 176.88 122.91 04/28/2025 11:49:14 -71.42, 176.89 122.92 1.18 14
8 04/28/2025 12:40:14 71.46, -15.87 57.12 04/28/2025 12:40:12 71.44, -15.81 57.10 2.88 2
9 04/28/2025 13:30:58 -71.44, 151.48 122.92 04/28/2025 13:31:10 -71.45, 151.46 122.91 1.10 12
10 04/28/2025 14:21:44 71.48, -41.26 57.11 04/28/2025 14:22:08 71.47, -41.24 57.10 0.83 24
11 04/28/2025 15:12:28 -71.46, 126.09 122.93 04/28/2025 15:13:06 -71.48, 126.03 122.91 3.24 38
12 04/28/2025 16:03:14 71.49, -66.66 57.10 04/28/2025 16:04:04 71.50, -66.67 57.11 1.46 50
13 04/28/2025 16:53:59 -71.52, 100.60 122.88 04/28/2025 16:55:02 -71.51, 100.60 122.90 1.41 63
14 04/28/2025 17:44:46 71.61, -92.24 57.20 04/28/2025 17:45:59 71.58, -92.01 57.16 8.65 73
15 04/28/2025 18:35:39 -72.05, 74.25 122.34 04/28/2025 18:36:49 -71.99, 76.04 122.47 61.70 70

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 4/19/2025
SNOs_Map_NOAA-21_NOAA-19_20250419.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 04/19/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and NOAA-19