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: 4/28/2025
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 17:27:01 -69.82, 95.15 126.17 05/03/2025 17:28:09 -69.74, 97.12 126.28 76.23 68
2 05/03/2025 18:17:35 69.17, -96.61 53.16 05/03/2025 18:18:47 69.15, -96.33 53.13 11.32 72
3 05/03/2025 19:08:16 -69.02, 70.92 127.01 05/03/2025 19:09:19 -69.04, 70.90 126.99 2.04 63
4 05/03/2025 19:59:02 69.01,-121.76 52.98 05/03/2025 19:59:46 69.04,-121.72 53.00 2.87 44
5 05/03/2025 20:49:45 -68.97, 45.62 127.08 05/03/2025 20:50:17 -68.99, 45.59 127.07 2.03 32
6 05/03/2025 21:40:31 68.96,-147.06 52.90 05/03/2025 21:40:44 68.98,-147.03 52.92 2.47 13
7 05/03/2025 22:31:14 -68.92, 20.31 127.15 05/03/2025 22:31:15 -68.93, 20.28 127.14 2.09 1
8 05/03/2025 23:22:00 68.91,-172.37 52.83 05/03/2025 23:21:42 68.93,-172.34 52.85 2.09 18
9 05/04/2025 00:12:43 -68.87, -4.99 127.23 05/04/2025 00:12:13 -68.88, -5.04 127.22 2.21 30
10 05/04/2025 01:03:29 68.86, 162.33 52.76 05/04/2025 01:02:40 68.87, 162.34 52.77 1.74 49
11 05/04/2025 01:54:12 -68.81, -30.29 127.30 05/04/2025 01:53:11 -68.82, -30.35 127.29 2.37 61
12 05/04/2025 02:44:54 68.59, 137.32 52.47 05/04/2025 02:43:42 68.60, 136.75 52.48 23.12 72
13 05/04/2025 03:35:30 -68.17, -54.82 127.97 05/04/2025 03:34:20 -68.18, -56.43 127.95 66.20 70

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 4/28/2025
SNOs_Map_NPP_GCOM-C_20250428.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 04/28/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C