Simultaneous Nadir Overpasses (SNOs) Predictions

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

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/12/2025
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (TERRA) Time (TERRA) Lat,Lon (TERRA) SZA (TERRA ) Distance(km) Time Diff (sec)
1 04/13/2025 04:45:39 -73.63, -81.43 115.32 04/13/2025 04:46:09 -73.64, -81.36 115.32 2.87 30
2 04/13/2025 05:36:22 73.51, 86.15 64.54 04/13/2025 05:35:30 73.53, 86.09 64.58 2.90 52
3 04/15/2025 15:07:16 73.63, -56.85 63.81 04/15/2025 15:08:06 73.67, -56.84 63.83 3.82 50
4 04/15/2025 15:57:59 -73.56, 110.65 116.29 04/15/2025 15:57:28 -73.57, 110.62 116.27 1.60 31
5 04/18/2025 01:28:52 -73.68, -32.37 117.00 04/18/2025 01:30:03 -73.67, -32.38 117.04 1.85 71
6 04/18/2025 02:19:35 73.58, 135.20 62.87 04/18/2025 02:19:23 73.59, 135.13 62.89 2.65 12
7 04/20/2025 11:50:42 74.36, -9.43 62.91 04/20/2025 11:51:48 74.22, -6.71 62.62 83.20 66
8 04/20/2025 12:41:12 -73.63, 159.66 117.91 04/20/2025 12:41:20 -73.61, 159.63 117.94 3.02 8
9 04/20/2025 13:31:53 73.43, -32.55 61.85 04/20/2025 13:30:41 73.47, -32.98 61.93 14.23 72
10 04/22/2025 23:02:48 73.63,-175.73 61.26 04/22/2025 23:03:14 73.63,-175.84 61.26 3.51 26
11 04/22/2025 23:53:31 -73.55, -8.22 118.85 04/22/2025 23:52:36 -73.56, -8.33 118.82 3.61 55
12 04/25/2025 09:24:25 -73.71,-151.31 119.46 04/25/2025 09:25:09 -73.68,-151.26 119.50 2.79 44
13 04/25/2025 10:15:08 73.60, 16.25 60.42 04/25/2025 10:14:29 73.58, 16.20 60.40 2.91 39

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 4/12/2025
SNOs_Map_NOAA-21_TERRA_20250412.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 04/12/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA