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: 1/9/2025
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 01/20/2025 07:49:24 -69.86,-120.72 90.10 01/20/2025 07:50:33 -69.78,-119.04 90.24 64.84 69
2 01/20/2025 08:39:58 69.25, 47.49 89.25 01/20/2025 08:41:10 69.25, 47.59 89.25 3.81 72
3 01/20/2025 09:30:41 -69.18,-145.10 90.83 01/20/2025 09:31:42 -69.18,-145.14 90.84 1.78 61
4 01/20/2025 10:21:27 69.20, 22.19 89.18 01/20/2025 10:22:09 69.19, 22.25 89.17 2.74 42
5 01/20/2025 11:12:10 -69.13,-170.40 90.90 01/20/2025 11:12:41 -69.11,-170.48 90.92 3.33 31
6 01/20/2025 12:02:55 69.09, -3.04 89.06 01/20/2025 12:03:08 69.12, -3.08 89.09 3.28 13
7 01/20/2025 12:53:39 -69.08, 164.29 90.97 01/20/2025 12:53:39 -69.10, 164.27 90.94 2.55 0
8 01/20/2025 13:44:24 69.04, -28.35 88.99 01/20/2025 13:44:07 69.05, -28.42 89.01 2.83 17
9 01/20/2025 14:35:08 -69.03, 138.99 91.03 01/20/2025 14:34:38 -69.03, 138.93 91.02 2.16 30
10 01/20/2025 15:25:54 69.05, -53.73 88.98 01/20/2025 15:25:05 69.04, -53.67 88.98 2.35 49
11 01/20/2025 16:16:38 -69.03, 113.61 91.04 01/20/2025 16:15:36 -69.02, 113.67 91.05 3.08 62
12 01/20/2025 17:07:20 68.84, -78.81 88.75 01/20/2025 17:06:06 68.86, -79.15 88.79 13.92 74
13 01/20/2025 17:57:56 -68.40, 89.09 91.72 01/20/2025 17:56:46 -68.36, 87.56 91.70 62.72 70

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 1/9/2025
SNOs_Map_NPP_GCOM-C_20250109.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 01/09/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C