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: 5/15/2023
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 05/17/2023 07:34:38 -70.10,-117.57 129.27 05/17/2023 07:35:06 -70.07,-117.55 129.30 3.19 28
2 05/17/2023 08:25:22 69.98, 49.93 50.60 05/17/2023 08:24:33 69.97, 49.95 50.59 0.83 49
3 05/19/2023 23:00:51 70.18,-169.25 50.24 05/19/2023 23:02:02 70.19,-169.15 50.23 3.81 71
4 05/19/2023 23:51:32 -70.05, -1.72 129.91 05/19/2023 23:51:32 -70.07, -1.68 129.89 3.35 0
5 05/20/2023 00:42:14 69.82, 165.93 49.85 05/20/2023 00:41:01 69.86, 165.66 49.90 11.02 73
6 05/22/2023 15:17:45 70.08, -53.34 49.59 05/22/2023 15:18:30 70.10, -53.39 49.60 2.56 45
7 05/22/2023 16:08:27 -70.00, 114.11 130.51 05/22/2023 16:08:00 -69.99, 114.09 130.52 1.46 27
8 05/25/2023 06:44:10 -70.90,-106.17 130.06 05/25/2023 06:45:18 -70.81,-104.11 130.20 76.04 68
9 05/25/2023 07:34:40 70.05, 62.48 49.05 05/25/2023 07:34:57 70.04, 62.41 49.04 2.92 17
10 05/25/2023 08:25:22 -69.96,-130.06 131.05 05/25/2023 08:24:27 -69.93,-130.11 131.07 3.18 55
11 05/27/2023 23:00:51 -70.13, 10.82 131.32 05/27/2023 23:01:56 -70.13, 10.78 131.33 1.57 65
12 05/27/2023 23:51:35 70.02, 178.29 48.56 05/27/2023 23:51:23 70.01, 178.26 48.56 1.65 12
13 05/28/2023 00:42:10 -69.55, -13.70 131.93 05/28/2023 00:40:59 -69.58, -14.71 131.87 39.20 71

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 5/15/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230516.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 05/15/2023 in txt file.

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