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: 9/26/2025
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 00:32:50 -74.79, -21.12 102.99 09/28/2025 00:33:59 -74.67, -19.51 103.20 49.11 69
2 09/28/2025 01:23:27 74.34, 147.38 76.53 09/28/2025 01:23:23 74.32, 147.36 76.51 2.29 4
3 09/28/2025 02:14:01 -73.87, -44.13 103.98 09/28/2025 02:12:52 -73.89, -45.93 103.86 55.72 69
4 09/30/2025 10:54:22 74.42, 4.46 77.54 09/30/2025 10:55:32 74.42, 4.49 77.52 0.84 70
5 09/30/2025 11:45:04 -74.34, 171.98 102.54 09/30/2025 11:44:54 -74.35, 172.00 102.53 1.62 10
6 10/02/2025 21:15:58 -74.43, 29.03 101.53 10/02/2025 21:17:02 -74.42, 29.05 101.55 1.45 64
7 10/02/2025 22:06:42 74.32,-163.38 78.37 10/02/2025 22:06:21 74.33,-163.48 78.39 3.08 21
8 10/05/2025 07:37:37 74.42, 53.65 79.39 10/05/2025 07:38:29 74.41, 53.62 79.38 1.19 52
9 10/05/2025 08:28:19 -74.34,-138.83 100.68 10/05/2025 08:27:51 -74.34,-138.87 100.68 1.37 28
10 10/07/2025 17:59:14 -74.44, 78.18 99.66 10/07/2025 17:59:58 -74.44, 78.26 99.68 2.44 44
11 10/07/2025 18:49:58 74.33,-114.23 80.24 10/07/2025 18:49:17 74.35,-114.26 80.26 2.06 41
12 10/10/2025 04:20:52 74.40, 102.88 81.22 10/10/2025 04:21:24 74.41, 102.81 81.23 2.87 32
13 10/10/2025 05:11:35 -74.37, -89.72 98.81 10/10/2025 05:10:46 -74.34, -89.70 98.83 3.22 49

Figure of NOAA-21 and TERRA satellite orbits during SNOs since TLE Epoch: 9/26/2025
SNOs_Map_NOAA-21_TERRA_20250927.jpg

Download SNOs between NOAA-21 and TERRA since TLE EPOCH: 09/26/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and TERRA