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: 7/8/2025
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 07/20/2025 13:52:11 69.96, -31.09 49.39 07/20/2025 13:53:17 69.87, -28.54 49.24 97.73 66
2 07/20/2025 14:42:45 -69.46, 136.96 131.13 07/20/2025 14:43:56 -69.40, 138.15 131.22 46.65 71
3 07/20/2025 15:33:22 68.95, -55.01 48.35 07/20/2025 15:34:31 68.96, -55.07 48.36 2.71 69
4 07/20/2025 16:24:06 -68.98, 112.26 131.61 07/20/2025 16:25:01 -68.97, 112.31 131.63 2.69 55
5 07/20/2025 17:14:51 68.90, -80.32 48.32 07/20/2025 17:15:29 68.91, -80.39 48.32 2.60 38
6 07/20/2025 18:05:35 -68.94, 86.95 131.64 07/20/2025 18:05:59 -68.92, 87.00 131.67 3.00 24
7 07/20/2025 18:56:20 68.85,-105.63 48.28 07/20/2025 18:56:27 68.85,-105.70 48.28 2.65 7
8 07/20/2025 19:47:03 -68.83, 61.71 131.74 07/20/2025 19:46:57 -68.86, 61.69 131.71 3.34 6
9 07/20/2025 20:37:49 68.80,-130.94 48.24 07/20/2025 20:37:25 68.80,-131.01 48.24 2.83 24
10 07/20/2025 21:28:32 -68.79, 36.40 131.77 07/20/2025 21:27:55 -68.81, 36.38 131.75 2.73 37
11 07/20/2025 22:19:18 68.76,-156.25 48.21 07/20/2025 22:18:23 68.74,-156.32 48.20 3.14 55
12 07/20/2025 23:10:01 -68.74, 11.10 131.81 07/20/2025 23:08:53 -68.75, 11.07 131.78 2.12 68
13 07/21/2025 00:00:39 68.28, 179.01 47.73 07/20/2025 23:59:28 68.31, 177.88 47.80 46.50 71
14 07/21/2025 00:51:14 -67.83, -13.11 132.73 07/21/2025 00:50:07 -67.84, -15.33 132.65 93.41 67

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 7/8/2025
SNOs_Map_NPP_GCOM-C_20250709.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 07/08/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C