Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NPP and GCOM-C Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/16/2025
Index Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Date (GCOM-C) Time (GCOM-C) Lat,Lon (GCOM-C) SZA (GCOM-C ) Distance(km) Time Diff (sec)
1 09/23/2025 08:29:40 69.62, 50.23 69.74 09/23/2025 08:30:49 69.57, 51.96 69.70 67.29 69
2 09/23/2025 09:20:15 -69.13,-141.75 110.74 09/23/2025 09:21:28 -69.09,-141.34 110.78 17.05 73
3 09/23/2025 10:10:57 68.93, 25.84 69.07 09/23/2025 10:11:58 68.93, 25.83 69.07 0.57 61
4 09/23/2025 11:01:41 -68.92,-166.83 110.93 09/23/2025 11:02:28 -68.93,-166.79 110.92 1.90 47
5 09/23/2025 11:52:26 68.87, 0.54 69.04 09/23/2025 11:52:56 68.87, 0.52 69.05 0.97 30
6 09/23/2025 12:43:10 -68.86, 167.87 110.96 09/23/2025 12:43:26 -68.88, 167.90 110.94 1.90 16
7 09/23/2025 13:33:55 68.82, -24.76 69.02 09/23/2025 13:33:54 68.82, -24.79 69.02 1.36 1
8 09/23/2025 14:24:39 -68.81, 142.57 110.98 09/23/2025 14:24:24 -68.82, 142.59 110.97 1.99 15
9 09/23/2025 15:15:24 68.76, -50.06 68.99 09/23/2025 15:14:52 68.77, -50.09 69.00 1.73 32
10 09/23/2025 16:06:07 -68.75, 117.27 111.01 09/23/2025 16:05:21 -68.77, 117.28 110.99 2.16 46
11 09/23/2025 16:56:52 68.71, -75.36 68.96 09/23/2025 16:55:49 68.72, -75.40 68.97 2.09 63
12 09/23/2025 17:47:35 -68.65, 92.04 111.09 09/23/2025 17:46:20 -68.67, 91.91 111.07 5.90 75
13 09/23/2025 18:38:08 67.95, -99.75 68.24 09/23/2025 18:37:00 67.96,-101.61 68.24 77.38 68

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 9/16/2025
SNOs_Map_NPP_GCOM-C_20250917.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 09/16/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C