Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NPP and TERRA Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 6/30/2025
Index Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Date (TERRA) Time (TERRA) Lat,Lon (TERRA) SZA (TERRA ) Distance(km) Time Diff (sec)
1 07/01/2025 21:36:32 74.05,-154.82 51.31 07/01/2025 21:37:06 74.05,-154.82 51.30 0.82 34
2 07/01/2025 22:27:15 -74.00, 12.61 128.75 07/01/2025 22:26:27 -74.00, 12.72 128.74 3.29 48
3 07/04/2025 07:58:13 -74.08,-130.31 128.45 07/04/2025 07:58:50 -74.08,-130.26 128.47 1.76 37
4 07/04/2025 08:48:57 73.98, 37.24 51.44 07/04/2025 08:48:10 74.00, 37.25 51.47 2.09 47
5 07/06/2025 18:19:55 74.07,-105.69 51.78 07/06/2025 18:20:33 74.07,-105.75 51.77 1.77 38
6 07/06/2025 19:10:38 -74.02, 61.74 128.27 07/06/2025 19:09:54 -74.01, 61.79 128.28 1.91 44
7 07/09/2025 04:41:36 -74.11, -81.20 127.90 07/09/2025 04:42:16 -74.12, -81.12 127.90 2.84 40
8 07/09/2025 05:32:20 74.01, 86.35 52.00 07/09/2025 05:31:37 73.99, 86.27 52.00 2.88 43
9 07/11/2025 15:03:18 74.10, -56.60 52.41 07/11/2025 15:03:59 74.09, -56.66 52.40 2.01 41
10 07/11/2025 15:54:01 -74.05, 110.83 127.64 07/11/2025 15:53:20 -74.03, 110.87 127.65 2.86 41
11 07/14/2025 01:24:57 -74.09, -32.00 127.24 07/14/2025 01:25:41 -74.11, -32.09 127.23 3.37 44
12 07/14/2025 02:15:42 74.04, 135.43 52.72 07/14/2025 02:15:01 74.04, 135.42 52.72 0.47 41

Figure of NPP and TERRA satellite orbits during SNOs since TLE Epoch: 6/30/2025
SNOs_Map_NPP_TERRA_20250630.jpg

Download SNOs between NPP and TERRA since TLE EPOCH: 06/30/2025 in txt file.

Historial Predications of SNOs between NPP and TERRA