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: 3/28/2025
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 04/07/2025 23:07:56 69.69,-169.96 62.42 04/07/2025 23:09:05 69.64,-168.39 62.33 61.11 69
2 04/07/2025 23:58:31 -69.25, -2.00 118.06 04/07/2025 23:59:44 -69.18, -1.67 118.14 15.32 73
3 04/08/2025 00:49:14 69.07, 165.56 61.75 04/08/2025 00:50:13 69.05, 165.55 61.73 1.82 59
4 04/08/2025 01:39:57 -69.05, -27.10 118.29 04/08/2025 01:40:43 -69.07, -27.05 118.27 2.86 46
5 04/08/2025 02:30:43 69.03, 140.24 61.68 04/08/2025 02:31:11 69.00, 140.24 61.65 3.16 28
6 04/08/2025 03:21:26 -69.01, -52.42 118.35 04/08/2025 03:21:41 -69.02, -52.36 118.35 2.47 15
7 04/08/2025 04:12:11 68.94, 114.99 61.56 04/08/2025 04:12:09 68.95, 114.93 61.58 2.68 2
8 04/08/2025 05:02:55 -68.97, -77.74 118.42 04/08/2025 05:02:39 -68.97, -77.67 118.42 2.91 16
9 04/08/2025 05:53:39 68.90, 89.67 61.50 04/08/2025 05:53:06 68.90, 89.63 61.50 1.72 33
10 04/08/2025 06:44:22 -68.88,-102.99 118.54 04/08/2025 06:43:37 -68.87,-103.05 118.55 3.01 45
11 04/08/2025 07:35:08 68.86, 64.35 61.43 04/08/2025 07:34:04 68.85, 64.32 61.42 1.79 64
12 04/08/2025 08:25:50 -68.79,-128.24 118.66 04/08/2025 08:24:35 -68.81,-128.35 118.63 5.36 75
13 04/08/2025 09:16:23 68.07, 40.01 60.60 04/08/2025 09:15:15 68.09, 38.10 60.66 79.27 68

Figure of NPP and GCOM-C satellite orbits during SNOs since TLE Epoch: 3/28/2025
SNOs_Map_NPP_GCOM-C_20250328.jpg

Download SNOs between NPP and GCOM-C since TLE EPOCH: 03/28/2025 in txt file.

Historial Predications of SNOs between NPP and GCOM-C