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: 11/22/2025
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 11/24/2025 04:04:34 70.40, 115.62 90.88 11/24/2025 04:05:35 70.42, 115.58 90.90 2.88 61
2 11/24/2025 04:55:16 -70.33, -76.95 89.18 11/24/2025 04:55:05 -70.31, -76.95 89.21 2.34 11
3 11/24/2025 05:45:50 69.66, 91.38 90.15 11/24/2025 05:44:41 69.72, 89.86 90.21 59.35 69
4 11/26/2025 20:21:35 70.40,-128.62 91.40 11/26/2025 20:22:05 70.40,-128.58 91.39 1.75 30
5 11/26/2025 21:12:16 -70.28, 38.89 88.72 11/26/2025 21:11:35 -70.29, 38.90 88.71 1.31 41
6 11/29/2025 11:47:55 -70.66, 179.42 87.89 11/29/2025 11:49:07 -70.57, 179.90 87.98 20.34 72
7 11/29/2025 12:38:36 70.36, -12.79 91.82 11/29/2025 12:38:36 70.35, -12.77 91.81 0.90 0
8 11/29/2025 13:29:17 -70.23, 154.72 88.30 11/29/2025 13:28:06 -70.25, 154.71 88.29 1.59 71
9 12/02/2025 04:04:52 -70.41, -64.42 87.72 12/02/2025 04:05:40 -70.39, -64.48 87.74 2.77 48
10 12/02/2025 04:55:37 70.32, 103.03 92.20 12/02/2025 04:55:06 70.34, 103.08 92.22 3.05 31
11 12/04/2025 19:31:23 71.07,-117.08 93.32 12/04/2025 19:32:31 70.95,-115.40 93.19 62.64 68
12 12/04/2025 20:21:53 -70.37, 51.39 87.39 12/04/2025 20:22:10 -70.35, 51.34 87.41 2.65 17
13 12/04/2025 21:12:38 70.28,-141.16 92.53 12/04/2025 21:11:36 70.30,-141.10 92.54 2.84 62

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/22/2025
SNOs_Map_NPP_LANDSAT-9_20251122.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 11/22/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9