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: 9/20/2025
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 69.66, 50.18 69.78 09/23/2025 08:30:48 69.59, 51.99 69.71 70.35 68
2 09/23/2025 09:20:15 -69.17,-141.81 110.70 09/23/2025 09:21:27 -69.10,-141.32 110.77 20.77 72
3 09/23/2025 10:10:57 68.96, 25.79 69.11 09/23/2025 10:11:57 68.94, 25.85 69.09 3.10 60
4 09/23/2025 11:01:40 -68.90,-166.81 110.94 09/23/2025 11:02:28 -68.89,-166.85 110.96 2.47 48
5 09/23/2025 11:52:26 68.91, 0.49 69.08 09/23/2025 11:52:55 68.89, 0.54 69.06 2.68 29
6 09/23/2025 12:43:09 -68.85, 167.89 110.97 09/23/2025 12:43:26 -68.84, 167.84 110.98 2.49 17
7 09/23/2025 13:33:55 68.85, -24.81 69.05 09/23/2025 13:33:53 68.84, -24.77 69.04 2.27 2
8 09/23/2025 14:24:38 -68.80, 142.59 111.00 09/23/2025 14:24:24 -68.78, 142.54 111.01 2.55 14
9 09/23/2025 15:15:24 68.80, -50.11 69.02 09/23/2025 15:14:51 68.79, -50.07 69.01 1.89 33
10 09/23/2025 16:06:07 -68.74, 117.29 111.02 09/23/2025 16:05:22 -68.73, 117.23 111.04 2.64 45
11 09/23/2025 16:56:53 68.74, -75.41 69.00 09/23/2025 16:55:49 68.73, -75.38 68.99 1.52 64
12 09/23/2025 17:47:35 -68.63, 92.06 111.10 09/23/2025 17:46:21 -68.62, 91.85 111.12 8.45 74
13 09/23/2025 18:38:09 67.99, -99.80 68.28 09/23/2025 18:37:00 67.98,-101.59 68.25 74.56 69

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 9/20/2025
SNOs_Map_NPP_GCOM-C_20250920.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 09/20/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C