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: 4/13/2025
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 69.64,-108.34 57.75 04/20/2025 19:03:00 69.58,-106.88 57.67 56.98 70
2 04/20/2025 19:52:25 -69.19, 59.63 122.73 04/20/2025 19:53:38 -69.16, 59.90 122.76 11.22 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 1.60 58
4 04/20/2025 21:33:52 -69.03, 34.48 122.92 04/20/2025 21:34:38 -69.00, 34.45 122.95 3.31 46
5 04/20/2025 22:24:38 69.00,-158.18 57.05 04/20/2025 22:25:05 68.99,-158.18 57.04 1.44 27
6 04/20/2025 23:15:20 -68.97, 9.18 122.99 04/20/2025 23:15:35 -68.95, 9.14 123.02 3.31 15
7 04/21/2025 00:06:06 68.95, 176.52 56.97 04/21/2025 00:06:02 68.94, 176.51 56.96 1.37 4
8 04/21/2025 00:56:49 -68.92, -16.12 123.07 04/21/2025 00:56:33 -68.90, -16.17 123.10 3.35 16
9 04/21/2025 01:47:35 68.89, 151.22 56.89 04/21/2025 01:47:00 68.88, 151.20 56.88 1.39 35
10 04/21/2025 02:38:18 -68.87, -41.42 123.15 04/21/2025 02:37:31 -68.84, -41.48 123.17 3.40 47
11 04/21/2025 03:29:04 68.84, 125.92 56.81 04/21/2025 03:27:58 68.83, 125.89 56.81 1.47 66
12 04/21/2025 04:19:45 -68.71, -66.58 123.34 04/21/2025 04:18:31 -68.68, -66.93 123.35 14.30 74
13 04/21/2025 05:10:18 67.98, 101.67 55.92 04/21/2025 05:09:10 68.02, 99.61 55.99 85.91 68

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 4/13/2025
SNOs_Map_NPP_GCOM-C_20250413.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 04/13/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C