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: 4/25/2025
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 04/25/2025 09:24:30 -73.68,-151.27 119.49 04/25/2025 09:25:10 -73.66,-151.32 119.52 2.77 40
2 04/25/2025 10:15:14 73.60, 16.22 60.41 04/25/2025 10:14:29 73.62, 16.28 60.44 3.25 45
3 04/27/2025 19:46:15 73.69,-126.73 59.74 04/27/2025 19:47:03 73.68,-126.79 59.73 1.98 48
4 04/27/2025 20:36:58 -73.62, 40.75 120.35 04/27/2025 20:36:25 -73.61, 40.72 120.35 1.45 33
5 04/30/2025 06:07:59 -73.71,-102.22 120.99 04/30/2025 06:08:58 -73.69,-102.29 121.02 2.98 59
6 04/30/2025 06:58:43 73.63, 65.27 58.91 04/30/2025 06:58:17 73.64, 65.27 58.92 0.74 26
7 05/02/2025 16:29:44 73.74, -77.72 58.31 05/02/2025 16:30:49 73.74, -77.72 58.29 0.11 65
8 05/02/2025 17:20:27 -73.67, 89.76 121.79 05/02/2025 17:20:11 -73.68, 89.83 121.78 2.44 16
9 05/05/2025 02:51:30 -73.88, -53.49 122.25 05/05/2025 02:52:42 -73.80, -53.10 122.36 14.57 72
10 05/05/2025 03:42:12 73.70, 114.25 57.55 05/05/2025 03:42:02 73.68, 114.32 57.52 3.17 10
11 05/05/2025 04:32:42 -72.98, -76.82 123.25 05/05/2025 04:31:35 -73.05, -79.29 123.04 80.45 67
12 05/07/2025 13:13:19 74.12, -29.50 57.34 05/07/2025 13:14:29 73.97, -28.24 57.12 41.82 70
13 05/07/2025 14:03:55 -73.70, 138.81 123.13 05/07/2025 14:03:55 -73.72, 138.88 123.12 2.83 0

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 4/25/2025
SNOs_Map_NOAA-21_TERRA_20250425.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 04/25/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA