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: 3/23/2025
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 04:13:30 71.16, 111.35 68.51 03/27/2025 04:12:19 71.19, 110.07 68.61 45.92 71
2 03/27/2025 05:04:21 -71.52, -81.96 111.13 03/27/2025 05:03:07 -71.52, -82.05 111.11 3.27 74
3 03/27/2025 05:55:08 71.59, 85.23 68.94 03/27/2025 05:54:08 71.58, 85.31 68.94 2.84 60
4 03/27/2025 06:45:52 -71.58,-107.44 111.09 03/27/2025 06:45:03 -71.55,-107.47 111.10 2.75 49
5 03/27/2025 07:36:38 71.60, 59.84 68.92 03/27/2025 07:36:04 71.62, 59.89 68.95 2.97 34
6 03/27/2025 08:27:22 -71.59,-132.83 111.11 03/27/2025 08:26:59 -71.59,-132.89 111.10 2.18 23
7 03/27/2025 09:18:08 71.60, 34.45 68.90 03/27/2025 09:18:01 71.60, 34.37 68.90 2.68 7
8 03/27/2025 10:08:53 -71.65,-158.31 111.07 03/27/2025 10:08:55 -71.62,-158.31 111.10 2.60 2
9 03/27/2025 10:59:39 71.67, 8.97 68.94 03/27/2025 10:59:57 71.64, 8.95 68.91 3.39 18
10 03/27/2025 11:50:23 -71.66, 176.30 111.09 03/27/2025 11:50:51 -71.66, 176.27 111.09 1.04 28
11 03/27/2025 12:41:09 71.67, -16.42 68.92 03/27/2025 12:41:53 71.67, -16.46 68.91 1.50 44
12 03/27/2025 13:31:54 -71.72, 150.82 111.05 03/27/2025 13:32:47 -71.69, 150.85 111.09 2.95 53
13 03/27/2025 14:22:39 71.68, -41.82 68.90 03/27/2025 14:23:49 71.70, -41.88 68.91 3.33 70
14 03/27/2025 15:13:28 -71.93, 125.05 110.85 03/27/2025 15:14:40 -71.88, 125.72 110.95 24.15 72
15 03/27/2025 16:04:25 72.51, -68.78 69.77 03/27/2025 16:05:31 72.45, -65.89 69.57 96.96 66

Figure of NOAA-21 and NOAA-19 satellite orbits during SNOs since TLE Epoch: 3/23/2025
SNOs_Map_NOAA-21_NOAA-19_20250323.jpg

Download SNOs between NOAA-21 and NOAA-19 since TLE EPOCH: 03/23/2025 in txt file.

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