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: 3/25/2025
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 03/27/2025 04:13:31 71.17, 111.33 68.53 03/27/2025 04:12:20 71.19, 110.07 68.61 45.31 71
2 03/27/2025 05:04:22 -71.53, -81.98 111.11 03/27/2025 05:03:08 -71.52, -82.06 111.11 3.23 74
3 03/27/2025 05:55:08 71.55, 85.30 68.90 03/27/2025 05:54:09 71.58, 85.30 68.94 3.57 59
4 03/27/2025 06:45:53 -71.59,-107.46 111.07 03/27/2025 06:45:03 -71.60,-107.38 111.06 3.02 50
5 03/27/2025 07:36:38 71.61, 59.82 68.93 03/27/2025 07:36:04 71.61, 59.88 68.94 2.40 34
6 03/27/2025 08:27:22 -71.60,-132.85 111.09 03/27/2025 08:26:59 -71.58,-132.90 111.10 2.41 23
7 03/27/2025 09:18:08 71.62, 34.43 68.91 03/27/2025 09:18:01 71.60, 34.37 68.90 2.99 7
8 03/27/2025 10:08:52 -71.61,-158.24 111.11 03/27/2025 10:08:55 -71.62,-158.32 111.10 2.81 3
9 03/27/2025 10:59:38 71.63, 9.04 68.90 03/27/2025 10:59:57 71.63, 8.95 68.90 3.19 19
10 03/27/2025 11:50:23 -71.67, 176.27 111.07 03/27/2025 11:50:51 -71.65, 176.26 111.10 1.92 28
11 03/27/2025 12:41:09 71.69, -16.45 68.93 03/27/2025 12:41:53 71.67, -16.47 68.91 2.33 44
12 03/27/2025 13:31:53 -71.68, 150.88 111.09 03/27/2025 13:32:47 -71.69, 150.84 111.09 1.72 54
13 03/27/2025 14:22:39 71.70, -41.84 68.92 03/27/2025 14:23:49 71.70, -41.89 68.91 1.94 70
14 03/27/2025 15:13:27 -71.89, 125.11 110.89 03/27/2025 15:14:40 -71.87, 125.71 110.95 20.91 73
15 03/27/2025 16:04:25 72.53, -68.80 69.78 03/27/2025 16:05:31 72.44, -65.90 69.57 97.70 66

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 3/25/2025
SNOs_Map_NOAA-21_NOAA-19_20250325.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 03/25/2025 in txt file.

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