Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and LANDSAT-8 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 8/29/2025
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Distance(km) Time Diff (sec)
1 08/30/2025 06:20:28 -70.11, -98.83 118.84 08/30/2025 06:21:24 -70.10, -98.87 118.86 2.29 56
2 08/30/2025 07:11:12 70.02, 68.62 61.08 08/30/2025 07:10:51 70.00, 68.63 61.06 2.38 21
3 08/30/2025 08:01:41 -69.22,-122.89 119.73 08/30/2025 08:00:32 -69.28,-124.71 119.62 71.87 69
4 09/01/2025 22:37:22 -70.09, 16.98 117.89 09/01/2025 22:37:55 -70.09, 16.99 117.91 0.87 33
5 09/01/2025 23:28:06 70.00,-175.57 62.02 09/01/2025 23:27:22 69.98,-175.51 62.01 2.83 44
6 09/04/2025 14:03:41 70.56, -35.30 63.56 09/04/2025 14:04:51 70.43, -34.27 63.40 40.80 70
7 09/04/2025 14:54:15 -70.03, 132.85 116.98 09/04/2025 14:54:26 -70.05, 132.82 116.96 2.79 11
8 09/04/2025 15:44:59 69.93, -59.70 62.94 09/04/2025 15:43:53 69.94, -59.69 62.95 1.10 66
9 09/07/2025 06:20:27 70.13, 81.15 64.11 09/07/2025 06:21:26 70.14, 81.20 64.11 2.25 59
10 09/07/2025 07:11:09 -70.02,-111.37 116.00 09/07/2025 07:10:56 -70.04,-111.32 115.98 2.64 13
11 09/07/2025 08:01:42 69.34, 56.94 63.32 09/07/2025 08:00:33 69.37, 55.42 63.39 59.89 69
12 09/09/2025 22:37:19 70.08,-162.99 65.06 09/09/2025 22:37:55 70.10,-162.98 65.08 2.82 36
13 09/09/2025 23:28:01 -69.97, 4.49 115.04 09/09/2025 23:27:26 -69.95, 4.43 115.07 3.37 35

Figure of NOAA-21 and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 8/29/2025
SNOs_Map_NOAA-21_LANDSAT-8_20250829.jpg

Download SNOs between NOAA-21 and LANDSAT-8 since TLE EPOCH: 08/29/2025 in txt file.

Historial Predications of SNOs between NOAA-21 and LANDSAT-8