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: 9/25/2025
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 09/28/2025 00:32:49 -74.75, -21.02 103.03 09/28/2025 00:33:59 -74.66, -19.54 103.21 44.63 70
2 09/28/2025 01:23:27 74.35, 147.35 76.54 09/28/2025 01:23:22 74.36, 147.44 76.54 2.83 5
3 09/28/2025 02:14:01 -73.88, -44.15 103.97 09/28/2025 02:12:51 -73.93, -45.84 103.83 52.50 70
4 09/30/2025 10:54:22 74.43, 4.43 77.55 09/30/2025 10:55:32 74.40, 4.45 77.51 3.37 70
5 09/30/2025 11:45:04 -74.35, 171.95 102.53 09/30/2025 11:44:54 -74.34, 171.97 102.54 1.69 10
6 10/02/2025 21:15:58 -74.39, 29.12 101.56 10/02/2025 21:17:03 -74.40, 29.01 101.57 3.52 65
7 10/02/2025 22:06:43 74.33,-163.41 78.39 10/02/2025 22:06:21 74.36,-163.40 78.42 2.78 22
8 10/05/2025 07:37:38 74.43, 53.61 79.41 10/05/2025 07:38:29 74.43, 53.68 79.40 2.16 51
9 10/05/2025 08:28:20 -74.35,-138.87 100.67 10/05/2025 08:27:51 -74.37,-138.81 100.65 2.30 29
10 10/07/2025 17:59:13 -74.41, 78.26 99.69 10/07/2025 17:59:58 -74.40, 78.19 99.71 2.29 45
11 10/07/2025 18:49:58 74.35,-114.28 80.26 10/07/2025 18:49:16 74.37,-114.21 80.28 2.69 42

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 9/25/2025
SNOs_Map_NOAA-21_TERRA_20250926.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 09/25/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA