Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-20 and TERRA Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 7/17/2025
Index Date (NOAA-20) Time (NOAA-20) Lat,Lon (NOAA-20) SZA (NOAA-20 ) Date (TERRA) Time (TERRA) Lat,Lon (TERRA) SZA (TERRA ) Distance(km) Time Diff (sec)
1 07/18/2025 08:59:16 -73.98,-145.97 126.61 07/18/2025 09:00:00 -73.99,-146.02 126.61 2.05 44
2 07/18/2025 09:50:01 73.91, 21.49 53.33 07/18/2025 09:49:20 73.93, 21.53 53.36 2.59 41
3 07/20/2025 19:20:59 74.01,-121.48 53.89 07/20/2025 19:21:41 74.02,-121.41 53.88 2.43 42
4 07/20/2025 20:11:41 -73.93, 46.04 126.20 07/20/2025 20:11:02 -73.94, 46.08 126.18 2.16 39
5 07/23/2025 05:42:39 -74.03, -96.94 125.61 07/23/2025 05:43:23 -74.03, -96.88 125.63 1.73 44
6 07/23/2025 06:33:23 73.92, 70.64 54.28 07/23/2025 06:32:44 73.91, 70.54 54.29 3.06 39
7 07/25/2025 16:04:21 74.03, -72.36 54.91 07/25/2025 16:05:04 74.03, -72.34 54.90 0.58 43
8 07/25/2025 16:55:03 -73.94, 95.18 125.19 07/25/2025 16:54:25 -73.96, 95.17 125.16 2.16 38
9 07/28/2025 02:26:00 -74.05, -47.81 124.53 07/28/2025 02:26:45 -74.02, -47.84 124.57 3.24 45
10 07/28/2025 03:16:44 73.95, 119.74 55.37 07/28/2025 03:16:05 73.95, 119.68 55.39 2.03 39
11 07/30/2025 12:47:42 74.06, -23.26 56.07 07/30/2025 12:48:25 74.04, -23.25 56.04 1.87 43
12 07/30/2025 13:38:24 -73.96, 144.29 124.04 07/30/2025 13:37:46 -73.98, 144.28 124.01 1.83 38

Figure of NOAA-20 and TERRA satellite orbits during SNOs since TLE Epoch: 7/17/2025
SNOs_Map_NOAA-20_TERRA_20250717.jpg

Download SNOs between NOAA-20 and TERRA since TLE EPOCH: 07/17/2025 in txt file.

Historial Predications of SNOs between NOAA-20 and TERRA