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: 11/5/2025
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 11/14/2025 04:42:09 -69.64, -72.71 92.18 11/14/2025 04:43:18 -69.56, -70.97 92.23 68.00 69
2 11/14/2025 05:32:43 68.98, 95.53 87.18 11/14/2025 05:33:56 68.97, 95.59 87.18 2.75 73
3 11/14/2025 06:23:25 -68.90, -97.04 92.89 11/14/2025 06:24:27 -68.92, -97.10 92.87 3.41 62
4 11/14/2025 07:14:12 68.93, 70.22 87.15 11/14/2025 07:14:54 68.92, 70.28 87.14 2.86 42
5 11/14/2025 08:04:54 -68.85,-122.35 92.92 11/14/2025 08:05:25 -68.87,-122.41 92.91 3.25 31
6 11/14/2025 08:55:41 68.88, 44.92 87.12 11/14/2025 08:55:52 68.86, 44.97 87.10 3.01 11
7 11/14/2025 09:46:23 -68.80,-147.65 92.96 11/14/2025 09:46:23 -68.82,-147.72 92.94 3.09 0
8 11/14/2025 10:37:10 68.83, 19.61 87.09 11/14/2025 10:36:50 68.81, 19.66 87.07 3.21 20
9 11/14/2025 11:27:52 -68.75,-172.96 92.99 11/14/2025 11:27:21 -68.76,-173.02 92.98 2.93 31
10 11/14/2025 12:18:38 68.73, -5.62 87.01 11/14/2025 12:17:48 68.76, -5.64 87.03 3.38 50
11 11/14/2025 13:09:21 -68.70, 161.73 93.02 11/14/2025 13:08:19 -68.71, 161.67 93.01 2.77 62
12 11/14/2025 14:00:03 68.47, -30.65 86.77 11/14/2025 13:58:50 68.49, -31.23 86.78 24.05 73
13 11/14/2025 14:50:38 -68.01, 137.26 93.67 11/14/2025 14:49:29 -68.01, 135.53 93.71 71.80 69

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 11/5/2025
SNOs_Map_NPP_GCOM-C_20251106.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 11/05/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C