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: 4/6/2025
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 04/07/2025 20:36:34 -69.64, 47.95 117.60 04/07/2025 20:37:44 -69.54, 49.31 117.73 53.92 70
2 04/07/2025 21:27:10 69.06,-143.92 61.80 04/07/2025 21:28:20 69.06,-143.98 61.79 2.45 70
3 04/07/2025 22:17:53 -69.05, 23.41 118.23 04/07/2025 22:18:50 -69.07, 23.41 118.22 1.33 57
4 04/07/2025 23:08:39 69.01,-169.22 61.71 04/07/2025 23:09:18 69.01,-169.29 61.71 2.71 39
5 04/07/2025 23:59:22 -69.00, -1.89 118.31 04/07/2025 23:59:48 -69.02, -1.90 118.30 2.02 26
6 04/08/2025 00:50:08 69.00, 165.41 61.68 04/08/2025 00:50:14 69.01, 165.48 61.69 2.92 6
7 04/08/2025 01:40:50 -68.94, -27.18 118.40 04/08/2025 01:40:45 -68.97, -27.20 118.37 2.71 5
8 04/08/2025 02:31:37 68.95, 140.11 61.60 04/08/2025 02:31:12 68.96, 140.18 61.61 2.87 25
9 04/08/2025 03:22:20 -68.94, -52.56 118.43 04/08/2025 03:21:43 -68.92, -52.51 118.45 3.29 37
10 04/08/2025 04:13:06 68.89, 114.81 61.52 04/08/2025 04:12:10 68.91, 114.87 61.54 2.98 56
11 04/08/2025 05:03:49 -68.88, -77.85 118.51 04/08/2025 05:02:41 -68.87, -77.81 118.52 2.64 68
12 04/08/2025 05:54:27 68.41, 90.09 60.99 04/08/2025 05:53:16 68.43, 89.00 61.04 44.64 71
13 04/08/2025 06:45:02 -67.97,-102.04 119.47 04/08/2025 06:43:54 -68.01,-104.16 119.39 88.65 68

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 4/6/2025
SNOs_Map_NPP_GCOM-C_20250406.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 04/06/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C