Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NPP and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 11/1/2025
Index Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Date (LANDSAT-9) Time (LANDSAT-9) Lat,Lon (LANDSAT-9) SZA (LANDSAT-9 ) Distance(km) Time Diff (sec)
1 11/02/2025 20:21:09 -70.40, 51.38 94.69 11/02/2025 20:22:04 -70.41, 51.44 94.68 2.21 55
2 11/02/2025 21:11:53 70.29,-141.13 85.22 11/02/2025 21:11:31 70.30,-141.07 85.23 3.02 22
3 11/02/2025 22:02:21 -69.45, 27.44 95.60 11/02/2025 22:01:13 -69.54, 25.49 95.53 76.41 68
4 11/05/2025 12:38:05 -70.36, 167.23 93.91 11/05/2025 12:38:36 -70.36, 167.25 93.90 1.24 31
5 11/05/2025 13:28:49 70.24, -25.28 86.00 11/05/2025 13:28:03 70.26, -25.26 86.01 1.95 46
6 11/08/2025 04:04:24 70.68, 115.17 87.20 11/08/2025 04:05:35 70.56, 115.78 87.09 25.80 71
7 11/08/2025 04:55:01 -70.32, -76.94 93.15 11/08/2025 04:55:08 -70.29, -76.98 93.18 3.28 7
8 11/08/2025 05:45:45 70.21, 90.55 86.75 11/08/2025 05:44:35 70.18, 90.51 86.72 2.94 70
9 11/10/2025 20:21:15 70.39,-128.58 87.67 11/10/2025 20:22:08 70.41,-128.57 87.69 2.20 53
10 11/10/2025 21:11:57 -70.29, 38.88 92.42 11/10/2025 21:11:38 -70.30, 38.91 92.41 1.69 19
11 11/10/2025 22:02:26 69.38,-152.44 86.69 11/10/2025 22:01:19 69.42,-154.67 86.71 87.35 67
12 11/13/2025 12:38:10 70.37, -12.77 88.37 11/13/2025 12:38:37 70.38, -12.72 88.39 2.74 27
13 11/13/2025 13:28:52 -70.28, 154.69 91.72 11/13/2025 13:28:07 -70.29, 154.76 91.71 3.11 45

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/1/2025
SNOs_Map_NPP_LANDSAT-9_20251102.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 11/01/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9