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: 8/28/2023
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 08/29/2023 07:34:07 70.68, 61.55 61.26 08/29/2023 07:35:15 70.60, 63.34 61.11 66.68 68
2 08/29/2023 08:24:36 -69.92,-129.94 119.54 08/29/2023 08:24:55 -69.94,-129.99 119.52 2.90 19
3 08/29/2023 09:15:21 69.84, 37.48 60.40 08/29/2023 09:14:22 69.84, 37.51 60.40 1.48 59
4 08/31/2023 23:50:50 70.02, 178.35 61.52 08/31/2023 23:51:55 70.01, 178.36 61.50 1.34 65
5 09/01/2023 00:41:31 -69.88, -14.13 118.62 09/01/2023 00:41:25 -69.90, -14.17 118.60 2.19 6
6 09/01/2023 01:32:09 69.44, 153.83 60.94 09/01/2023 01:30:58 69.46, 152.88 60.99 37.15 71
7 09/03/2023 16:07:46 69.99, -65.85 62.46 09/03/2023 16:08:25 70.00, -65.78 62.46 2.71 39
8 09/03/2023 16:58:27 -69.86, 101.68 117.67 09/03/2023 16:57:56 -69.84, 101.63 117.69 2.94 31
9 09/06/2023 07:34:10 -70.72,-118.54 115.81 09/06/2023 07:35:18 -70.62,-116.63 115.97 71.33 68
10 09/06/2023 08:24:41 69.92, 50.02 63.37 09/06/2023 08:24:56 69.91, 49.98 63.35 2.39 15
11 09/06/2023 09:15:23 -69.84,-142.53 116.71 09/06/2023 09:14:26 -69.80,-142.53 116.74 3.48 57
12 09/08/2023 23:50:53 -70.03, -1.68 115.54 09/08/2023 23:51:58 -70.02, -1.62 115.56 2.51 65
13 09/09/2023 00:41:37 69.91, 165.80 64.36 09/09/2023 00:41:25 69.90, 165.86 64.35 2.41 12
14 09/09/2023 01:32:12 -69.45, -26.21 116.11 09/09/2023 01:31:00 -69.53, -27.02 116.01 32.97 72

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/28/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230828.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/28/2023 in txt file.

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