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: 3/23/2025
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 03/24/2025 15:20:40 74.31, -61.78 72.97 03/24/2025 15:21:45 74.22, -58.67 72.68 94.35 65
2 03/24/2025 16:11:08 -73.51, 107.49 107.95 03/24/2025 16:11:18 -73.52, 107.50 107.94 1.50 10
3 03/24/2025 17:01:52 73.43, -85.02 71.95 03/24/2025 17:00:39 73.43, -85.02 71.97 0.21 73
4 03/27/2025 02:32:48 73.56, 131.95 71.15 03/27/2025 02:33:22 73.55, 131.99 71.12 1.96 34
5 03/27/2025 03:23:31 -73.50, -60.58 108.95 03/27/2025 03:22:43 -73.49, -60.47 108.95 3.42 48
6 03/29/2025 12:54:25 -73.59, 156.49 109.79 03/29/2025 12:55:24 -73.58, 156.49 109.81 0.97 59
7 03/29/2025 13:45:08 73.47, -35.93 70.07 03/29/2025 13:44:45 73.48, -36.04 70.09 3.71 23
8 03/31/2025 23:16:11 73.98,-179.86 69.71 03/31/2025 23:17:20 73.86,-178.47 69.49 45.07 69
9 04/01/2025 00:06:47 -73.56, -11.54 110.79 04/01/2025 00:06:46 -73.54, -11.48 110.81 2.78 1
10 04/01/2025 00:57:22 73.04, 156.92 68.64 04/01/2025 00:56:13 73.12, 155.35 68.81 51.57 69
11 04/03/2025 10:28:25 73.58, 13.01 68.30 04/03/2025 10:28:45 73.58, 13.06 68.29 1.65 20
12 04/03/2025 11:19:08 -73.49,-179.49 111.81 04/03/2025 11:18:07 -73.47,-179.49 111.82 2.63 61
13 04/05/2025 20:50:02 -73.59, 37.57 112.63 04/05/2025 20:50:44 -73.59, 37.55 112.63 0.96 42
14 04/05/2025 21:40:46 73.54,-154.99 67.31 04/05/2025 21:40:04 73.53,-154.91 67.30 2.65 42

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 3/23/2025
SNOs_Map_NOAA-21_TERRA_20250323.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 03/23/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA