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: 8/20/2025
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 08/22/2025 13:58:44 -74.63, 137.82 116.58 08/22/2025 13:59:53 -74.55, 139.53 116.78 51.35 69
2 08/22/2025 14:49:20 74.18, -53.69 62.92 08/22/2025 14:49:18 74.18, -53.65 62.92 1.37 2
3 08/22/2025 15:39:56 -73.76, 114.66 117.54 08/22/2025 15:38:46 -73.78, 113.15 117.41 46.86 70
4 08/25/2025 00:20:21 74.47, 162.85 64.05 08/25/2025 00:21:32 74.39, 163.69 63.90 26.71 71
5 08/25/2025 01:11:00 -74.19, -29.13 116.25 08/25/2025 01:10:56 -74.21, -29.05 116.24 2.86 4
6 08/25/2025 02:01:32 73.53, 139.77 63.03 08/25/2025 02:00:25 73.61, 137.34 63.28 76.75 67
7 08/27/2025 10:41:59 -74.43,-172.47 115.16 08/27/2025 10:43:10 -74.35,-171.85 115.29 20.50 71
8 08/27/2025 11:32:39 74.17, -4.50 64.56 08/27/2025 11:32:31 74.17, -4.58 64.57 2.50 8
9 08/27/2025 12:23:10 -73.50, 164.43 116.18 08/27/2025 12:22:04 -73.53, 161.71 115.96 85.99 66
10 08/29/2025 21:03:36 74.26,-147.46 65.51 08/29/2025 21:04:46 74.29,-147.42 65.51 3.39 70
11 08/29/2025 21:54:19 -74.19, 20.05 114.57 08/29/2025 21:54:09 -74.18, 19.99 114.57 2.06 10
12 09/01/2025 07:25:16 -74.28,-122.92 113.61 09/01/2025 07:26:24 -74.29,-122.88 113.62 1.87 68
13 09/01/2025 08:16:00 74.22, 44.55 66.33 09/01/2025 08:15:43 74.20, 44.59 66.32 2.26 17
14 09/03/2025 17:46:56 74.27, -98.31 67.25 09/03/2025 17:47:58 74.29, -98.32 67.26 2.79 62
15 09/03/2025 18:37:39 -74.19, 69.20 112.83 09/03/2025 18:37:21 -74.19, 69.12 112.81 2.56 18

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 8/20/2025
SNOs_Map_NOAA-21_TERRA_20250823.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 08/20/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA