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: 6/9/2025
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 06/11/2025 16:05:09 69.84, -64.30 46.63 06/11/2025 16:06:17 69.77, -62.15 46.53 82.88 68
2 06/11/2025 16:55:44 -69.36, 103.72 133.87 06/11/2025 16:56:56 -69.28, 104.52 133.96 32.58 72
3 06/11/2025 17:46:23 68.99, -88.45 45.76 06/11/2025 17:47:28 69.02, -88.44 45.78 3.38 65
4 06/11/2025 18:37:07 -68.99, 78.87 134.25 06/11/2025 18:37:58 -69.01, 78.92 134.23 3.32 51
5 06/11/2025 19:27:52 68.94,-113.76 45.70 06/11/2025 19:28:26 68.97,-113.75 45.73 3.20 34
6 06/11/2025 20:18:36 -68.94, 53.56 134.31 06/11/2025 20:18:56 -68.96, 53.61 134.29 3.15 20
7 06/11/2025 21:09:21 68.89,-139.06 45.65 06/11/2025 21:09:24 68.92,-139.06 45.67 3.03 3
8 06/11/2025 22:00:05 -68.89, 28.26 134.36 06/11/2025 21:59:54 -68.91, 28.30 134.34 3.00 11
9 06/11/2025 22:50:50 68.84,-164.37 45.59 06/11/2025 22:50:22 68.87,-164.37 45.62 2.85 28
10 06/11/2025 23:41:34 -68.84, 2.95 134.42 06/11/2025 23:40:52 -68.86, 3.00 134.40 2.86 42
11 06/12/2025 00:32:19 68.79, 170.33 45.53 06/12/2025 00:31:20 68.82, 170.33 45.56 2.68 59
12 06/12/2025 01:23:03 -68.79, -22.36 134.47 06/12/2025 01:21:50 -68.81, -22.31 134.45 2.74 73
13 06/12/2025 02:13:38 68.20, 145.72 44.93 06/12/2025 02:12:28 68.22, 144.32 44.97 58.15 70

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 6/9/2025
SNOs_Map_NPP_GCOM-C_20250610.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 06/09/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C