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: 8/25/2025
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 08/28/2025 11:39:04 69.49, 2.98 59.88 08/28/2025 11:40:14 69.43, 4.30 59.80 51.98 70
2 08/28/2025 12:29:39 -69.03, 170.94 120.58 08/28/2025 12:30:52 -69.00, 171.08 120.62 6.94 73
3 08/28/2025 13:20:24 68.95, -21.64 59.35 08/28/2025 13:21:20 68.95, -21.60 59.35 1.53 56
4 08/28/2025 14:11:07 -68.93, 145.72 120.66 08/28/2025 14:11:51 -68.90, 145.71 120.69 3.21 44
5 08/28/2025 15:01:53 68.89, -46.93 59.32 08/28/2025 15:02:18 68.90, -46.91 59.32 1.22 25
6 08/28/2025 15:52:36 -68.87, 120.42 120.70 08/28/2025 15:52:49 -68.85, 120.40 120.72 2.49 13
7 08/28/2025 16:43:22 68.84, -72.23 59.29 08/28/2025 16:43:16 68.85, -72.21 59.30 1.42 6
8 08/28/2025 17:34:04 -68.81, 95.12 120.73 08/28/2025 17:33:46 -68.80, 95.10 120.74 1.85 18
9 08/28/2025 18:24:50 68.78, -97.53 59.26 08/28/2025 18:24:13 68.80, -97.51 59.27 1.98 37
10 08/28/2025 19:15:33 -68.75, 69.82 120.76 08/28/2025 19:14:44 -68.75, 69.79 120.77 1.40 49
11 08/28/2025 20:06:19 68.72,-122.83 59.22 08/28/2025 20:05:11 68.75,-122.82 59.25 2.68 68
12 08/28/2025 20:56:59 -68.54, 44.74 120.96 08/28/2025 20:55:45 -68.54, 44.28 120.95 18.65 74
13 08/28/2025 21:47:32 67.81,-147.02 58.32 08/28/2025 21:46:25 67.83,-149.23 58.37 92.64 67

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 8/25/2025
SNOs_Map_NPP_GCOM-C_20250826.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 08/25/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C