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: 12/2/2025
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 12/10/2025 00:41:54 69.49, 167.68 92.29 12/10/2025 00:43:04 69.46, 169.03 92.27 52.91 70
2 12/10/2025 01:32:29 -69.05, -24.38 88.15 12/10/2025 01:33:42 -69.03, -24.19 88.17 8.06 73
3 12/10/2025 02:23:14 68.95, 143.06 91.76 12/10/2025 02:24:10 68.97, 143.12 91.78 3.04 56
4 12/10/2025 03:13:57 -68.94, -49.61 88.25 12/10/2025 03:14:41 -68.92, -49.58 88.27 2.85 44
5 12/10/2025 04:04:43 68.90, 117.76 91.71 12/10/2025 04:05:08 68.91, 117.81 91.73 2.59 25
6 12/10/2025 04:55:26 -68.89, -74.90 88.30 12/10/2025 04:55:39 -68.86, -74.89 88.32 2.63 13
7 12/10/2025 05:46:12 68.84, 92.46 91.66 12/10/2025 05:46:06 68.86, 92.49 91.68 2.23 6
8 12/10/2025 06:36:55 -68.83,-100.20 88.35 12/10/2025 06:36:37 -68.81,-100.20 88.37 2.54 18
9 12/10/2025 07:27:41 68.78, 67.17 91.61 12/10/2025 07:27:04 68.80, 67.18 91.63 2.01 37
10 12/10/2025 08:18:24 -68.77,-125.50 88.40 12/10/2025 08:17:35 -68.75,-125.51 88.42 2.57 49
11 12/10/2025 09:09:10 68.73, 41.87 91.56 12/10/2025 09:08:02 68.74, 41.87 91.58 1.93 68
12 12/10/2025 09:59:49 -68.50,-150.51 88.66 12/10/2025 09:58:36 -68.53,-151.04 88.64 21.51 73
13 12/10/2025 10:50:23 67.81, 17.68 90.66 12/10/2025 10:49:16 67.82, 15.45 90.66 93.37 67

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 12/2/2025
SNOs_Map_NPP_GCOM-C_20251202.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 12/02/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C