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: 7/10/2025
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 69.95, -31.08 49.38 07/20/2025 13:53:17 69.88, -28.54 49.24 97.53 66
2 07/20/2025 14:42:45 -69.45, 136.97 131.13 07/20/2025 14:43:56 -69.40, 138.15 131.22 46.47 71
3 07/20/2025 15:33:22 68.94, -55.01 48.35 07/20/2025 15:34:31 68.96, -55.07 48.36 3.30 69
4 07/20/2025 16:24:06 -68.98, 112.26 131.61 07/20/2025 16:25:01 -68.97, 112.32 131.63 2.35 55
5 07/20/2025 17:14:51 68.90, -80.32 48.31 07/20/2025 17:15:29 68.91, -80.38 48.32 3.03 38
6 07/20/2025 18:05:35 -68.93, 86.95 131.65 07/20/2025 18:05:59 -68.92, 87.01 131.66 2.54 24
7 07/20/2025 18:56:20 68.85,-105.62 48.27 07/20/2025 18:56:27 68.85,-105.69 48.28 2.88 7
8 07/20/2025 19:47:04 -68.88, 61.65 131.68 07/20/2025 19:46:57 -68.87, 61.70 131.70 2.89 7
9 07/20/2025 20:37:49 68.80,-130.93 48.24 07/20/2025 20:37:25 68.80,-131.00 48.24 2.86 24
10 07/20/2025 21:28:32 -68.78, 36.41 131.78 07/20/2025 21:27:55 -68.81, 36.39 131.74 3.35 37
11 07/20/2025 22:19:19 68.80,-156.31 48.26 07/20/2025 22:18:22 68.80,-156.24 48.26 2.93 57
12 07/20/2025 23:10:01 -68.73, 11.10 131.81 07/20/2025 23:08:53 -68.76, 11.08 131.78 2.74 68
13 07/21/2025 00:00:39 68.27, 179.02 47.72 07/20/2025 23:59:28 68.31, 177.89 47.80 46.71 71
14 07/21/2025 00:51:14 -67.83, -13.10 132.73 07/21/2025 00:50:07 -67.84, -15.33 132.65 93.52 67

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 7/10/2025
SNOs_Map_NPP_GCOM-C_20250710.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 07/10/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C