Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between NOAA-21 and LANDSAT-9 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 7/12/2023
Index Date (NOAA-21) Time (NOAA-21) Lat,Lon (NOAA-21) SZA (NOAA-21 ) Date (LANDSAT-9) Time (LANDSAT-9) Lat,Lon (LANDSAT-9) SZA (LANDSAT-9 ) Distance(km) Time Diff (sec)
1 07/14/2023 23:00:48 -70.87, 9.64 130.68 07/14/2023 23:01:55 -70.81, 11.89 130.84 82.50 67
2 07/14/2023 23:51:17 69.98, 178.36 48.38 07/14/2023 23:51:35 70.00, 178.34 48.40 2.29 18
3 07/15/2023 00:41:59 -69.88, -14.18 131.72 07/15/2023 00:41:05 -69.88, -14.19 131.71 0.27 54
4 07/17/2023 15:17:26 -70.08, 126.67 131.08 07/17/2023 15:18:38 -70.06, 126.67 131.12 2.06 72
5 07/17/2023 16:08:10 69.98, -65.86 48.82 07/17/2023 16:08:05 69.96, -65.83 48.80 2.26 5
6 07/17/2023 16:58:49 -69.72, 101.84 131.45 07/17/2023 16:57:36 -69.79, 101.57 131.36 13.16 73
7 07/20/2023 07:34:18 -70.03,-117.47 130.66 07/20/2023 07:35:07 -70.06,-117.45 130.64 3.33 49
8 07/20/2023 08:25:02 69.93, 49.99 49.24 07/20/2023 08:24:34 69.95, 50.04 49.27 3.30 28
9 07/20/2023 09:15:26 -68.92,-141.26 131.80 07/20/2023 09:14:19 -68.96,-143.65 131.66 95.77 67
10 07/22/2023 23:51:09 -69.98, -1.62 130.19 07/22/2023 23:51:36 -69.97, -1.68 130.20 2.39 27
11 07/23/2023 00:41:53 69.88, 165.83 49.72 07/23/2023 00:41:03 69.86, 165.81 49.71 2.43 50
12 07/25/2023 15:17:22 70.21, -53.51 50.61 07/25/2023 15:18:33 70.13, -53.20 50.51 14.20 71
13 07/25/2023 16:08:02 -69.99, 114.14 129.61 07/25/2023 16:08:04 -69.97, 114.21 129.64 3.51 2
14 07/25/2023 16:58:44 69.79, -78.25 50.18 07/25/2023 16:57:32 69.81, -78.38 50.21 5.11 72

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 7/12/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230713.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 07/12/2023 in txt file.

Historial Predications of SNOs between NOAA-21 and LANDSAT-9