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: 4/17/2025
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 19:01:49 69.62,-108.30 57.73 04/20/2025 19:02:59 69.56,-106.90 57.65 54.57 70
2 04/20/2025 19:52:24 -69.17, 59.66 122.75 04/20/2025 19:53:37 -69.14, 59.88 122.78 8.98 73
3 04/20/2025 20:43:08 69.03,-132.84 57.10 04/20/2025 20:44:06 69.03,-132.89 57.10 2.04 58
4 04/20/2025 21:33:51 -69.01, 34.51 122.94 04/20/2025 21:34:36 -69.03, 34.50 122.91 3.26 45
5 04/20/2025 22:24:37 68.97,-158.14 57.02 04/20/2025 22:25:04 68.97,-158.20 57.02 2.43 27
6 04/20/2025 23:15:21 -69.00, 9.14 122.96 04/20/2025 23:15:34 -68.98, 9.19 122.99 3.26 13
7 04/21/2025 00:06:06 68.92, 176.56 56.94 04/21/2025 00:06:02 68.92, 176.49 56.94 2.81 4
8 04/21/2025 00:56:50 -68.95, -16.16 123.04 04/21/2025 00:56:32 -68.93, -16.12 123.07 3.00 18
9 04/21/2025 01:47:36 68.92, 151.19 56.92 04/21/2025 01:46:59 68.92, 151.25 56.92 2.68 37
10 04/21/2025 02:38:19 -68.90, -41.46 123.12 04/21/2025 02:37:30 -68.87, -41.43 123.14 2.78 49
11 04/21/2025 03:29:05 68.87, 125.89 56.84 04/21/2025 03:27:57 68.87, 125.94 56.84 2.33 68
12 04/21/2025 04:19:44 -68.63, -66.48 123.42 04/21/2025 04:18:31 -68.66, -66.96 123.38 19.69 73
13 04/21/2025 05:10:18 67.95, 101.70 55.89 04/21/2025 05:09:11 67.95, 99.52 55.91 91.22 67

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 4/17/2025
SNOs_Map_NPP_GCOM-C_20250417.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 04/17/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C