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: 9/18/2025
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 69.62, 50.23 69.74 09/23/2025 08:30:49 69.57, 51.96 69.70 67.36 69
2 09/23/2025 09:20:15 -69.14,-141.76 110.74 09/23/2025 09:21:28 -69.08,-141.35 110.79 17.44 73
3 09/23/2025 10:10:57 68.93, 25.84 69.07 09/23/2025 10:11:58 68.93, 25.83 69.07 0.72 61
4 09/23/2025 11:01:41 -68.92,-166.84 110.92 09/23/2025 11:02:28 -68.92,-166.80 110.92 1.45 47
5 09/23/2025 11:52:26 68.87, 0.54 69.05 09/23/2025 11:52:56 68.87, 0.52 69.04 0.91 30
6 09/23/2025 12:43:10 -68.87, 167.86 110.95 09/23/2025 12:43:26 -68.87, 167.89 110.95 1.20 16
7 09/23/2025 13:33:55 68.82, -24.76 69.02 09/23/2025 13:33:54 68.82, -24.79 69.02 1.21 1
8 09/23/2025 14:24:39 -68.81, 142.56 110.98 09/23/2025 14:24:24 -68.82, 142.58 110.97 1.08 15
9 09/23/2025 15:15:24 68.76, -50.06 68.99 09/23/2025 15:14:52 68.77, -50.10 68.99 1.53 32
10 09/23/2025 16:06:08 -68.76, 117.26 111.01 09/23/2025 16:05:22 -68.77, 117.28 111.00 1.11 46
11 09/23/2025 16:56:53 68.71, -75.36 68.96 09/23/2025 16:55:50 68.71, -75.40 68.97 1.86 63
12 09/23/2025 17:47:36 -68.65, 92.03 111.09 09/23/2025 17:46:21 -68.66, 91.90 111.08 5.54 75
13 09/23/2025 18:38:09 67.95, -99.76 68.24 09/23/2025 18:37:01 67.96,-101.61 68.23 77.37 68

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 9/18/2025
SNOs_Map_NPP_GCOM-C_20250919.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 09/18/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C