Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between LANDSAT-8 and NPP Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/15/2025
Index Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Distance(km) Time Diff (sec)
1 04/15/2025 13:51:58 70.26, -31.52 60.21 04/15/2025 13:51:02 70.23, -31.50 60.19 3.00 56
2 04/15/2025 14:41:28 -70.14, 135.94 119.92 04/15/2025 14:41:44 -70.16, 135.93 119.90 2.37 16
3 04/15/2025 15:31:08 69.32, -57.54 59.28 04/15/2025 15:32:15 69.33, -55.53 59.23 78.67 67
4 04/18/2025 06:08:26 70.18, 84.25 59.19 04/18/2025 06:08:01 70.19, 84.33 59.20 3.03 25
5 04/18/2025 06:57:55 -70.12,-108.20 120.89 04/18/2025 06:58:43 -70.11,-108.24 120.90 1.62 48
6 04/20/2025 21:35:24 -70.28, 32.63 121.64 04/20/2025 21:34:15 -70.29, 32.63 121.62 0.82 69
7 04/20/2025 22:24:51 70.17,-159.88 58.25 04/20/2025 22:24:59 70.16,-159.87 58.24 1.60 8
8 04/20/2025 23:14:25 -69.84, 7.28 122.09 04/20/2025 23:15:36 -69.81, 7.98 122.14 26.90 71
9 04/23/2025 13:51:50 -70.23, 148.44 122.59 04/23/2025 13:51:13 -70.21, 148.51 122.61 3.39 37
10 04/23/2025 14:41:17 70.11, -44.07 57.29 04/23/2025 14:41:58 70.14, -44.07 57.32 2.64 41
11 04/26/2025 05:18:44 70.35, 96.88 56.67 04/26/2025 05:17:31 70.34, 96.74 56.68 5.05 73
12 04/26/2025 06:08:15 -70.18, -95.73 123.51 04/26/2025 06:08:12 -70.19, -95.71 123.49 1.38 3
13 04/26/2025 06:57:43 70.01, 71.68 56.32 04/26/2025 06:58:55 70.03, 71.86 56.33 6.96 72
14 04/28/2025 21:35:09 70.26,-147.35 55.73 04/28/2025 21:34:28 70.24,-147.34 55.72 1.85 41
15 04/28/2025 22:24:39 -70.15, 20.12 124.39 04/28/2025 22:25:10 -70.14, 20.14 124.40 1.37 31

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 4/15/2025
SNOs_Map_LANDSAT-8_NPP_20250415.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 04/15/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP