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: 4/2/2025
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 04/07/2025 20:36:33 -69.62, 47.97 117.62 04/07/2025 20:37:43 -69.57, 49.36 117.70 53.83 70
2 04/07/2025 21:27:10 69.10,-143.98 61.84 04/07/2025 21:28:19 69.08,-143.94 61.81 2.59 69
3 04/07/2025 22:17:52 -69.04, 23.43 118.25 04/07/2025 22:18:50 -69.04, 23.37 118.25 2.49 58
4 04/07/2025 23:08:39 69.05,-169.28 61.76 04/07/2025 23:09:17 69.03,-169.25 61.74 1.85 38
5 04/07/2025 23:59:21 -68.98, -1.86 118.33 04/07/2025 23:59:48 -68.99, -1.93 118.32 2.98 27
6 04/08/2025 00:50:08 68.99, 165.43 61.67 04/08/2025 00:50:15 68.98, 165.44 61.66 1.14 7
7 04/08/2025 01:40:51 -68.98, -27.24 118.36 04/08/2025 01:40:45 -69.00, -27.16 118.34 3.47 6
8 04/08/2025 02:31:37 68.94, 140.13 61.59 04/08/2025 02:31:13 68.93, 140.14 61.59 0.49 24
9 04/08/2025 03:22:20 -68.92, -52.53 118.44 04/08/2025 03:21:44 -68.89, -52.54 118.47 3.34 36
10 04/08/2025 04:13:06 68.88, 114.83 61.50 04/08/2025 04:12:11 68.88, 114.83 61.51 0.47 55
11 04/08/2025 05:03:49 -68.87, -77.83 118.53 04/08/2025 05:02:42 -68.84, -77.85 118.55 2.70 67
12 04/08/2025 05:54:28 68.45, 90.03 61.04 04/08/2025 05:53:16 68.46, 89.03 61.07 40.86 72
13 04/08/2025 06:45:03 -68.01,-102.08 119.43 04/08/2025 06:43:55 -67.99,-104.19 119.41 87.84 68

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 4/2/2025
SNOs_Map_NPP_GCOM-C_20250402.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 04/02/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C