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: 3/24/2025
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 03/25/2025 21:20:38 -69.96, 36.45 112.25 03/25/2025 21:21:46 -69.90, 38.72 112.38 86.93 68
2 03/25/2025 22:11:13 69.34,-155.34 67.10 03/25/2025 22:12:25 69.24,-154.83 66.98 22.63 72
3 03/25/2025 23:01:51 -69.07, 12.36 113.20 03/25/2025 23:02:58 -69.08, 12.32 113.20 2.09 67
4 03/25/2025 23:52:38 69.09, 179.65 66.81 03/25/2025 23:53:25 69.07, 179.69 66.78 2.73 47
5 03/26/2025 00:43:20 -69.03, -12.95 113.27 03/26/2025 00:43:56 -69.02, -13.01 113.29 2.71 36
6 03/26/2025 01:34:06 68.99, 154.40 66.68 03/26/2025 01:34:23 69.00, 154.36 66.69 1.85 17
7 03/26/2025 02:24:49 -68.99, -38.27 113.34 03/26/2025 02:24:53 -69.00, -38.26 113.33 1.37 4
8 03/26/2025 03:15:35 68.95, 129.09 66.61 03/26/2025 03:15:21 68.93, 129.03 66.59 2.99 14
9 03/26/2025 04:06:18 -68.95, -63.59 113.41 03/26/2025 04:05:51 -68.94, -63.59 113.42 1.66 27
10 03/26/2025 04:57:04 68.91, 103.77 66.54 03/26/2025 04:56:18 68.92, 103.78 66.55 0.97 46
11 03/26/2025 05:47:47 -68.91, -88.91 113.48 03/26/2025 05:46:48 -68.92, -88.84 113.46 2.99 59
12 03/26/2025 06:38:31 68.77, 78.59 66.36 03/26/2025 06:37:17 68.80, 78.38 66.41 9.36 74
13 03/26/2025 07:29:06 -68.34,-113.52 114.10 03/26/2025 07:27:55 -68.37,-114.81 114.03 52.98 71

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 3/24/2025
SNOs_Map_NPP_GCOM-C_20250324.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 03/24/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C