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: 4/19/2025
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 04/20/2025 19:01:50 69.65,-108.34 57.76 04/20/2025 19:03:00 69.58,-106.89 57.67 57.01 70
2 04/20/2025 19:52:25 -69.20, 59.62 122.72 04/20/2025 19:53:38 -69.15, 59.89 122.77 11.94 73
3 04/20/2025 20:43:09 69.06,-132.88 57.13 04/20/2025 20:44:07 69.04,-132.87 57.11 1.96 58
4 04/20/2025 21:33:52 -69.04, 34.47 122.91 04/20/2025 21:34:37 -69.05, 34.51 122.90 2.05 45
5 04/20/2025 22:24:38 69.00,-158.18 57.05 04/20/2025 22:25:05 68.99,-158.18 57.03 1.77 27
6 04/20/2025 23:15:21 -68.98, 9.17 122.99 04/20/2025 23:15:35 -69.00, 9.20 122.98 1.91 14
7 04/21/2025 00:06:07 68.95, 176.52 56.97 04/21/2025 00:06:03 68.94, 176.51 56.96 1.66 4
8 04/21/2025 00:56:50 -68.93, -16.13 123.06 04/21/2025 00:56:33 -68.94, -16.11 123.05 1.85 17
9 04/21/2025 01:47:36 68.90, 151.22 56.89 04/21/2025 01:47:01 68.88, 151.20 56.88 1.61 35
10 04/21/2025 02:38:19 -68.88, -41.43 123.14 04/21/2025 02:37:31 -68.89, -41.41 123.13 1.88 48
11 04/21/2025 03:29:05 68.84, 125.92 56.81 04/21/2025 03:27:59 68.83, 125.89 56.81 1.63 66
12 04/21/2025 04:19:45 -68.66, -66.52 123.39 04/21/2025 04:18:32 -68.68, -66.94 123.36 16.97 73
13 04/21/2025 05:10:19 67.98, 101.67 55.92 04/21/2025 05:09:11 68.02, 99.61 55.99 85.90 68

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 4/19/2025
SNOs_Map_NPP_GCOM-C_20250419.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 04/19/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C