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: 4/10/2025
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 -74.41, 84.74 113.54 04/10/2025 17:34:38 -74.29, 87.92 113.85 96.36 65
2 04/10/2025 18:24:02 73.61,-105.98 65.56 04/10/2025 18:24:10 73.61,-105.89 65.55 2.95 8
3 04/10/2025 19:14:44 -73.48, 61.62 114.60 04/10/2025 19:13:32 -73.50, 61.55 114.57 2.56 72
4 04/13/2025 04:45:39 -73.64, -81.45 115.31 04/13/2025 04:46:09 -73.63, -81.39 115.33 2.37 30
5 04/13/2025 05:36:22 73.53, 86.11 64.56 04/13/2025 05:35:30 73.51, 86.05 64.56 2.69 52
6 04/15/2025 15:07:16 73.64, -56.87 63.82 04/15/2025 15:08:06 73.65, -56.89 63.81 0.49 50
7 04/15/2025 15:57:59 -73.56, 110.63 116.28 04/15/2025 15:57:28 -73.55, 110.58 116.29 2.41 31
8 04/18/2025 01:28:53 -73.69, -32.37 117.00 04/18/2025 01:30:03 -73.69, -32.32 117.01 1.91 70
9 04/18/2025 02:19:36 73.58, 135.19 62.88 04/18/2025 02:19:24 73.56, 135.08 62.87 3.86 12
10 04/20/2025 11:50:42 74.31, -9.30 62.85 04/20/2025 11:51:49 74.18, -6.79 62.59 77.09 67
11 04/20/2025 12:41:13 -73.63, 159.67 117.92 04/20/2025 12:41:20 -73.63, 159.68 117.92 0.44 7
12 04/20/2025 13:31:54 73.43, -32.55 61.85 04/20/2025 13:30:41 73.49, -32.94 61.95 14.01 73
13 04/22/2025 23:02:49 73.67,-175.82 61.31 04/22/2025 23:03:13 73.64,-175.81 61.27 3.04 24
14 04/22/2025 23:53:32 -73.58, -8.31 118.80 04/22/2025 23:52:35 -73.57, -8.30 118.81 1.82 57

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 4/10/2025
SNOs_Map_NOAA-21_TERRA_20250410.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 04/10/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA