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: 4/5/2023
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 04/07/2023 06:44:37 -71.10,-106.52 115.65 04/07/2023 06:45:43 -71.02,-103.76 115.82 99.79 66
2 04/07/2023 07:35:03 70.04, 62.49 63.23 04/07/2023 07:35:26 70.04, 62.43 63.23 2.13 23
3 04/07/2023 08:25:45 -69.96,-130.06 116.88 04/07/2023 08:24:56 -69.93,-130.09 116.90 3.15 49
4 04/09/2023 23:01:12 -70.32, 10.54 117.48 04/09/2023 23:02:24 -70.23, 10.93 117.59 17.48 72
5 04/09/2023 23:51:52 70.00, 178.35 62.17 04/09/2023 23:51:53 70.01, 178.27 62.19 3.47 1
6 04/10/2023 00:42:34 -69.91, -14.20 117.94 04/10/2023 00:41:23 -69.90, -14.25 117.93 1.91 71
7 04/12/2023 15:17:59 -70.12, 126.64 118.68 04/12/2023 15:18:53 -70.11, 126.64 118.70 0.94 54
8 04/12/2023 16:08:43 70.01, -65.89 61.20 04/12/2023 16:08:20 70.00, -65.87 61.19 1.60 23
9 04/12/2023 16:59:11 -69.18, 102.64 119.68 04/12/2023 16:58:02 -69.23, 100.72 119.57 75.71 69
10 04/15/2023 07:34:49 -70.09,-117.53 119.68 04/15/2023 07:35:20 -70.06,-117.54 119.72 2.90 31
11 04/15/2023 08:25:32 69.93, 50.01 60.14 04/15/2023 08:24:47 69.95, 49.95 60.17 3.27 45
12 04/17/2023 23:01:02 70.43,-169.59 59.73 04/17/2023 23:02:13 70.30,-168.94 59.58 28.22 71
13 04/17/2023 23:51:38 -70.01, -1.64 120.71 04/17/2023 23:51:46 -70.03, -1.70 120.70 2.81 8
14 04/18/2023 00:42:22 69.91, 165.83 59.17 04/18/2023 00:41:13 69.91, 165.79 59.18 1.59 69

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/5/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230405.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/05/2023 in txt file.

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