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: 4/26/2025
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 04/27/2025 19:46:16 73.72,-126.81 59.78 04/27/2025 19:47:03 73.70,-126.76 59.74 3.16 47
2 04/27/2025 20:36:58 -73.60, 40.78 120.37 04/27/2025 20:36:25 -73.62, 40.74 120.34 2.51 33
3 04/30/2025 06:07:59 -73.70,-102.20 121.00 04/30/2025 06:08:58 -73.70,-102.28 121.01 2.27 59
4 04/30/2025 06:58:43 73.63, 65.29 58.90 04/30/2025 06:58:17 73.65, 65.29 58.93 2.77 26
5 05/02/2025 16:29:44 73.74, -77.72 58.31 05/02/2025 16:30:49 73.74, -77.71 58.29 0.43 65
6 05/02/2025 17:20:27 -73.67, 89.76 121.79 05/02/2025 17:20:11 -73.68, 89.83 121.77 2.63 16
7 05/05/2025 02:51:30 -73.89, -53.52 122.23 05/05/2025 02:52:42 -73.80, -53.11 122.37 16.43 72
8 05/05/2025 03:42:11 73.67, 114.33 57.51 05/05/2025 03:42:02 73.67, 114.30 57.52 1.34 9
9 05/05/2025 04:32:42 -73.00, -76.85 123.24 05/05/2025 04:31:35 -73.04, -79.30 123.05 79.69 67
10 05/07/2025 13:13:17 74.10, -29.45 57.32 05/07/2025 13:14:27 74.01, -28.16 57.15 40.67 70
11 05/07/2025 14:03:53 -73.68, 138.86 123.16 05/07/2025 14:03:54 -73.70, 138.85 123.14 2.29 1
12 05/07/2025 14:54:29 73.20, -52.73 56.31 05/07/2025 14:53:20 73.25, -54.40 56.46 53.73 69
13 05/09/2025 23:35:07 -74.47, -5.82 122.92 05/09/2025 23:36:13 -74.37, -2.86 123.18 89.15 66
14 05/10/2025 00:25:37 73.70, 163.39 56.22 05/10/2025 00:25:43 73.71, 163.36 56.23 1.78 6

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 4/26/2025
SNOs_Map_NOAA-21_TERRA_20250426.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 04/26/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA