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: 9/15/2025
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 69.65, 50.18 69.78 09/23/2025 08:30:48 69.59, 51.99 69.72 70.47 68
2 09/23/2025 09:20:15 -69.17,-141.80 110.71 09/23/2025 09:21:27 -69.11,-141.31 110.76 20.31 72
3 09/23/2025 10:10:57 68.96, 25.80 69.11 09/23/2025 10:11:57 68.95, 25.86 69.09 2.82 60
4 09/23/2025 11:01:40 -68.90,-166.80 110.95 09/23/2025 11:02:28 -68.90,-166.84 110.95 1.34 48
5 09/23/2025 11:52:26 68.91, 0.50 69.08 09/23/2025 11:52:55 68.90, 0.55 69.07 2.40 29
6 09/23/2025 12:43:09 -68.84, 167.90 110.98 09/23/2025 12:43:26 -68.85, 167.86 110.97 1.67 17
7 09/23/2025 13:33:55 68.85, -24.80 69.05 09/23/2025 13:33:53 68.84, -24.76 69.04 2.01 2
8 09/23/2025 14:24:38 -68.79, 142.60 111.00 09/23/2025 14:24:24 -68.79, 142.55 111.00 2.00 14
9 09/23/2025 15:15:24 68.80, -50.10 69.02 09/23/2025 15:14:51 68.79, -50.06 69.02 1.64 33
10 09/23/2025 16:06:07 -68.73, 117.30 111.03 09/23/2025 16:05:22 -68.74, 117.24 111.02 2.33 45
11 09/23/2025 16:56:53 68.74, -75.40 69.00 09/23/2025 16:55:49 68.74, -75.37 68.99 1.32 64
12 09/23/2025 17:47:35 -68.63, 92.07 111.11 09/23/2025 17:46:21 -68.63, 91.87 111.10 8.24 74
13 09/23/2025 18:38:09 67.99, -99.80 68.27 09/23/2025 18:37:00 67.98,-101.58 68.26 74.31 69

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 9/15/2025
SNOs_Map_NPP_GCOM-C_20250916.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 09/15/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C