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 69.91, -31.03 49.34 07/20/2025 13:53:18 69.86, -28.56 49.22 94.51 67
2 07/20/2025 14:42:46 -69.47, 136.95 131.12 07/20/2025 14:43:57 -69.39, 138.13 131.23 47.02 71
3 07/20/2025 15:33:22 68.96, -55.03 48.37 07/20/2025 15:34:31 68.95, -55.09 48.35 2.87 69
4 07/20/2025 16:24:05 -68.94, 112.31 131.65 07/20/2025 16:25:01 -68.96, 112.30 131.64 2.13 56
5 07/20/2025 17:14:51 68.91, -80.34 48.33 07/20/2025 17:15:29 68.89, -80.40 48.31 3.37 38
6 07/20/2025 18:05:34 -68.89, 87.01 131.69 07/20/2025 18:05:59 -68.91, 86.99 131.68 1.56 25
7 07/20/2025 18:56:20 68.86,-105.65 48.29 07/20/2025 18:56:26 68.89,-105.64 48.32 3.18 6
8 07/20/2025 19:47:03 -68.85, 61.70 131.72 07/20/2025 19:46:57 -68.85, 61.68 131.72 1.09 6
9 07/20/2025 20:37:49 68.82,-130.95 48.26 07/20/2025 20:37:24 68.84,-130.95 48.28 2.50 25
10 07/20/2025 21:28:32 -68.80, 36.39 131.76 07/20/2025 21:27:55 -68.80, 36.37 131.76 0.87 37
11 07/20/2025 22:19:18 68.77,-156.26 48.22 07/20/2025 22:18:22 68.78,-156.26 48.24 1.83 56
12 07/20/2025 23:10:01 -68.75, 11.08 131.80 07/20/2025 23:08:53 -68.74, 11.06 131.80 1.07 68
13 07/21/2025 00:00:39 68.29, 178.99 47.74 07/20/2025 23:59:28 68.30, 177.86 47.78 46.43 71
14 07/21/2025 00:51:14 -67.84, -13.12 132.71 07/21/2025 00:50:06 -67.88, -15.28 132.61 90.65 68

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 7/8/2025
SNOs_Map_NPP_GCOM-C_20250708.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