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: 4/12/2025
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 69.66,-108.37 57.78 04/20/2025 19:02:59 69.61,-106.84 57.70 59.54 69
2 04/20/2025 19:52:25 -69.21, 59.60 122.71 04/20/2025 19:53:38 -69.14, 59.87 122.79 13.18 73
3 04/20/2025 20:43:08 69.02,-132.83 57.10 04/20/2025 20:44:07 69.02,-132.91 57.09 2.99 59
4 04/20/2025 21:33:52 -69.05, 34.45 122.90 04/20/2025 21:34:37 -69.03, 34.49 122.92 2.34 45
5 04/20/2025 22:24:38 69.02,-158.21 57.07 04/20/2025 22:25:04 69.02,-158.14 57.06 2.64 26
6 04/20/2025 23:15:21 -68.99, 9.15 122.97 04/20/2025 23:15:35 -68.98, 9.18 122.99 2.01 14
7 04/21/2025 00:06:07 68.97, 176.49 56.99 04/21/2025 00:06:02 68.97, 176.55 56.99 2.27 5
8 04/21/2025 00:56:50 -68.94, -16.15 123.05 04/21/2025 00:56:33 -68.93, -16.13 123.07 1.71 17
9 04/21/2025 01:47:36 68.91, 151.19 56.91 04/21/2025 01:47:00 68.91, 151.24 56.91 1.93 36
10 04/21/2025 02:38:19 -68.89, -41.45 123.13 04/21/2025 02:37:31 -68.87, -41.44 123.14 1.45 48
11 04/21/2025 03:29:05 68.86, 125.89 56.83 04/21/2025 03:27:58 68.86, 125.93 56.84 1.62 67
12 04/21/2025 04:19:45 -68.67, -66.53 123.37 04/21/2025 04:18:31 -68.71, -66.89 123.33 15.08 74
13 04/21/2025 05:10:19 68.00, 101.64 55.94 04/21/2025 05:09:11 67.99, 99.58 55.96 86.06 68

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 4/12/2025
SNOs_Map_NPP_GCOM-C_20250412.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 04/12/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C