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: 4/9/2025
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 04/10/2025 17:33:33 -74.39, 84.79 113.56 04/10/2025 17:34:38 -74.31, 87.97 113.83 95.75 65
2 04/10/2025 18:24:02 73.59,-105.94 65.54 04/10/2025 18:24:11 73.57,-105.95 65.52 1.71 9
3 04/10/2025 19:14:45 -73.51, 61.55 114.57 04/10/2025 19:13:32 -73.52, 61.59 114.55 1.35 73
4 04/13/2025 04:45:39 -73.62, -81.41 115.33 04/13/2025 04:46:10 -73.60, -81.45 115.36 2.84 31
5 04/13/2025 05:36:23 73.56, 86.04 64.59 04/13/2025 05:35:30 73.53, 86.09 64.58 3.15 53
6 04/15/2025 15:07:16 73.68, -56.95 63.86 04/15/2025 15:08:05 73.67, -56.84 63.83 3.67 49
7 04/15/2025 15:57:58 -73.55, 110.67 116.30 04/15/2025 15:57:27 -73.57, 110.63 116.27 3.03 31
8 04/18/2025 01:28:52 -73.67, -32.34 117.01 04/18/2025 01:30:03 -73.67, -32.38 117.03 1.18 71
9 04/18/2025 02:19:36 73.62, 135.10 62.92 04/18/2025 02:19:23 73.59, 135.13 62.89 3.37 13
10 04/20/2025 11:50:42 74.35, -9.40 62.90 04/20/2025 11:51:48 74.21, -6.73 62.61 82.04 66
11 04/20/2025 12:41:12 -73.62, 159.69 117.93 04/20/2025 12:41:20 -73.60, 159.63 117.94 2.64 8
12 04/20/2025 13:31:53 73.42, -32.53 61.84 04/20/2025 13:30:41 73.46, -32.99 61.92 15.40 72
13 04/22/2025 23:02:49 73.67,-175.81 61.30 04/22/2025 23:03:13 73.67,-175.75 61.30 2.11 24
14 04/22/2025 23:53:32 -73.58, -8.30 118.81 04/22/2025 23:52:35 -73.60, -8.24 118.78 2.95 57

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 4/9/2025
SNOs_Map_NOAA-21_TERRA_20250409.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 04/09/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA