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: 3/18/2025
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 03/19/2025 18:37:06 73.52,-109.02 74.02 03/19/2025 18:37:44 73.52,-109.03 74.00 0.45 38
2 03/19/2025 19:27:49 -73.47, 58.42 106.07 03/19/2025 19:27:05 -73.46, 58.52 106.07 3.34 44
3 03/22/2025 04:58:45 -73.55, -84.51 106.93 03/22/2025 04:59:52 -73.54, -84.55 106.95 1.75 67
4 03/22/2025 05:49:29 73.47, 82.99 72.98 03/22/2025 05:49:13 73.45, 82.92 72.96 3.34 16
5 03/24/2025 16:11:08 -73.51, 107.49 107.95 03/24/2025 16:11:19 -73.52, 107.50 107.94 1.55 11
6 03/24/2025 17:01:52 73.44, -85.03 71.96 03/24/2025 17:00:40 73.43, -85.03 71.96 1.09 72
7 03/27/2025 02:32:48 73.56, 131.96 71.14 03/27/2025 02:33:24 73.55, 131.99 71.13 1.04 36
8 03/27/2025 03:23:31 -73.48, -60.55 108.96 03/27/2025 03:22:45 -73.50, -60.45 108.94 3.62 46
9 03/29/2025 12:54:26 -73.57, 156.54 109.81 03/29/2025 12:55:29 -73.57, 156.47 109.82 2.36 63
10 03/29/2025 13:45:10 73.50, -36.01 70.11 03/29/2025 13:44:49 73.52, -35.97 70.13 2.58 21
11 03/31/2025 23:16:16 74.15, 179.72 69.89 03/31/2025 23:17:23 74.06,-178.04 69.67 68.71 67
12 04/01/2025 00:06:48 -73.52, -11.46 110.83 04/01/2025 00:06:53 -73.54, -11.49 110.81 2.53 5

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 3/18/2025
SNOs_Map_NOAA-21_TERRA_20250318.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 03/18/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA