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: 11/7/2025
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 -69.55, -70.99 92.24 67.67 69
2 11/14/2025 05:32:43 68.98, 95.53 87.18 11/14/2025 05:33:56 68.96, 95.58 87.17 2.73 73
3 11/14/2025 06:23:26 -68.95, -97.11 92.84 11/14/2025 06:24:26 -68.97, -97.04 92.82 3.17 60
4 11/14/2025 07:14:12 68.93, 70.23 87.15 11/14/2025 07:14:54 68.91, 70.27 87.13 2.92 42
5 11/14/2025 08:04:55 -68.90,-122.42 92.87 11/14/2025 08:05:24 -68.91,-122.35 92.86 2.99 29
6 11/14/2025 08:55:41 68.88, 44.92 87.12 11/14/2025 08:55:52 68.86, 44.96 87.10 3.15 11
7 11/14/2025 09:46:24 -68.85,-147.72 92.90 11/14/2025 09:46:22 -68.86,-147.66 92.90 2.86 2
8 11/14/2025 10:37:09 68.78, 19.69 87.04 11/14/2025 10:36:50 68.81, 19.66 87.06 3.24 19
9 11/14/2025 11:27:53 -68.80,-173.03 92.93 11/14/2025 11:27:20 -68.81,-172.96 92.93 2.79 33
10 11/14/2025 12:18:38 68.73, -5.62 87.01 11/14/2025 12:17:48 68.75, -5.65 87.03 2.94 50
11 11/14/2025 13:09:22 -68.76, 161.66 92.96 11/14/2025 13:08:18 -68.76, 161.73 92.97 2.77 64
12 11/14/2025 14:00:03 68.46, -30.64 86.77 11/14/2025 13:58:50 68.48, -31.24 86.77 24.45 73
13 11/14/2025 14:50:38 -68.01, 137.26 93.67 11/14/2025 14:49:29 -68.00, 135.52 93.72 72.27 69

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 11/7/2025
SNOs_Map_NPP_GCOM-C_20251107.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 11/07/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C