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: 4/22/2025
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 05/03/2025 17:27:00 -69.78, 95.20 126.21 05/03/2025 17:28:09 -69.73, 97.10 126.29 73.38 69
2 05/03/2025 18:17:34 69.15, -96.57 53.13 05/03/2025 18:18:47 69.13, -96.36 53.11 8.47 73
3 05/03/2025 19:08:16 -69.04, 70.89 126.99 05/03/2025 19:09:19 -69.03, 70.88 127.00 1.33 63
4 05/03/2025 19:59:02 69.04,-121.79 53.00 05/03/2025 19:59:46 69.02,-121.74 52.98 2.89 44
5 05/03/2025 20:49:45 -68.99, 45.59 127.06 05/03/2025 20:50:17 -68.98, 45.57 127.08 1.66 32
6 05/03/2025 21:40:31 68.99,-147.10 52.93 05/03/2025 21:40:44 68.97,-147.06 52.91 2.82 13
7 05/03/2025 22:31:14 -68.94, 20.29 127.14 05/03/2025 22:31:15 -68.92, 20.26 127.15 2.01 1
8 05/03/2025 23:22:00 68.93,-172.40 52.85 05/03/2025 23:21:42 68.91,-172.37 52.83 2.83 18
9 05/04/2025 00:12:43 -68.88, -5.01 127.21 05/04/2025 00:12:13 -68.87, -5.05 127.23 2.37 30
10 05/04/2025 01:03:29 68.88, 162.30 52.78 05/04/2025 01:02:40 68.86, 162.32 52.76 2.91 49
11 05/04/2025 01:54:12 -68.83, -30.32 127.28 05/04/2025 01:53:11 -68.81, -30.36 127.30 2.71 61
12 05/04/2025 02:44:54 68.61, 137.28 52.49 05/04/2025 02:43:41 68.64, 136.80 52.52 19.97 73
13 05/04/2025 03:35:30 -68.19, -54.85 127.95 05/04/2025 03:34:20 -68.17, -56.44 127.96 65.88 70

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 4/22/2025
SNOs_Map_NPP_GCOM-C_20250423.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 04/22/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C