Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-20 and LANDSAT-8 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 7/12/2025
Index Date (NOAA-20) Time (NOAA-20) Lat,Lon (NOAA-20) SZA (NOAA-20 ) Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Distance(km) Time Diff (sec)
1 07/14/2025 14:28:04 70.70, -41.90 49.16 07/14/2025 14:29:12 70.61, -40.16 48.99 64.70 68
2 07/14/2025 15:18:34 -70.00, 126.53 131.58 07/14/2025 15:18:51 -70.01, 126.59 131.58 2.69 17
3 07/14/2025 16:09:18 69.86, -65.96 48.29 07/14/2025 16:08:19 69.85, -65.99 48.28 1.89 59
4 07/17/2025 06:44:47 70.03, 74.94 48.89 07/17/2025 06:45:53 70.05, 74.90 48.90 2.98 66
5 07/17/2025 07:35:29 -69.95,-117.63 131.19 07/17/2025 07:35:23 -69.94,-117.62 131.20 1.17 6
6 07/17/2025 08:26:07 69.50, 50.34 48.35 07/17/2025 08:24:55 69.56, 49.50 48.45 33.63 72
7 07/19/2025 23:01:43 70.04,-169.31 49.39 07/19/2025 23:02:24 70.03,-169.25 49.37 2.38 41
8 07/19/2025 23:52:24 -69.91, -1.80 130.75 07/19/2025 23:51:54 -69.93, -1.76 130.73 2.35 30
9 07/22/2025 14:28:09 -70.91, 137.76 129.17 07/22/2025 14:29:16 -70.77, 140.08 129.41 86.03 67
10 07/22/2025 15:18:38 70.00, -53.48 49.87 07/22/2025 15:18:55 70.00, -53.41 49.86 2.68 17
11 07/22/2025 16:09:19 -69.87, 114.04 130.27 07/22/2025 16:08:26 -69.85, 114.01 130.28 2.43 53
12 07/25/2025 06:44:47 -70.04,-105.07 129.54 07/25/2025 06:45:59 -70.03,-105.13 129.56 2.47 72
13 07/25/2025 07:35:32 69.97, 62.35 50.40 07/25/2025 07:35:25 69.97, 62.42 50.40 3.04 7
14 07/25/2025 08:26:10 -69.67,-129.90 129.91 07/25/2025 08:24:58 -69.71,-130.31 129.85 16.28 72

Figure of NOAA-20 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 7/12/2025
SNOs_Map_NOAA-20_LANDSAT-8_20250712.jpg

Download SNOs between NOAA-20 and LANDSAT-8 since TLE EPOCH: 07/12/2025 in txt file.

Historial Predications of SNOs between NOAA-20 and LANDSAT-8