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: 11/30/2025
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 12/02/2025 04:04:51 -70.40, -64.42 87.72 12/02/2025 04:05:38 -70.40, -64.46 87.73 1.63 47
2 12/02/2025 04:55:36 70.31, 103.04 92.19 12/02/2025 04:55:05 70.30, 103.04 92.18 0.30 31
3 12/04/2025 19:31:21 71.02,-116.99 93.27 12/04/2025 19:32:30 70.89,-115.48 93.13 56.70 69
4 12/04/2025 20:21:52 -70.38, 51.38 87.38 12/04/2025 20:22:07 -70.40, 51.41 87.36 2.68 15
5 12/04/2025 21:12:37 70.28,-141.16 92.53 12/04/2025 21:11:34 70.30,-141.09 92.54 3.04 63
6 12/07/2025 11:48:11 70.43, -0.26 92.99 12/07/2025 11:49:07 70.43, -0.30 92.98 1.71 56
7 12/07/2025 12:38:53 -70.36, 167.17 87.08 12/07/2025 12:38:36 -70.37, 167.25 87.07 3.26 17
8 12/07/2025 13:29:24 69.52, -24.26 92.09 12/07/2025 13:28:16 69.55, -26.26 92.12 77.92 68
9 12/10/2025 04:05:12 70.42, 115.52 93.24 12/10/2025 04:05:35 70.42, 115.58 93.25 2.39 23
10 12/10/2025 04:55:53 -70.29, -76.97 86.88 12/10/2025 04:55:05 -70.31, -76.95 86.86 2.56 48
11 12/12/2025 19:31:26 -70.45, 63.92 86.52 12/12/2025 19:32:36 -70.45, 63.86 86.52 2.20 70
12 12/12/2025 20:22:11 70.36,-128.64 93.40 12/12/2025 20:22:03 70.34,-128.66 93.38 2.61 8
13 12/12/2025 21:12:48 -70.03, 39.21 86.94 12/12/2025 21:11:36 -70.07, 38.59 86.89 23.95 72

Figure of NPP and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 11/30/2025
SNOs_Map_NPP_LANDSAT-9_20251201.jpg

Download SNOs between NPP and LANDSAT-9 since TLE EPOCH: 11/30/2025 in txt file.

Historial Predications of SNOs between NPP and LANDSAT-9