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: 4/22/2023
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 04/23/2023 07:34:35 70.12, 62.47 57.57 04/23/2023 07:35:18 70.13, 62.54 57.58 3.64 43
2 04/23/2023 08:25:16 -69.98,-130.01 122.58 04/23/2023 08:24:49 -69.96,-130.07 122.60 2.82 27
3 04/25/2023 23:51:24 70.08, 178.30 56.65 04/25/2023 23:51:47 70.06, 178.31 56.63 2.81 23
4 04/26/2023 00:42:05 -69.95, -14.17 123.50 04/26/2023 00:41:17 -69.95, -14.21 123.50 1.53 48
5 04/28/2023 15:17:32 -70.38, 126.32 123.88 04/28/2023 15:18:44 -70.28, 126.86 124.01 23.55 72
6 04/28/2023 16:08:12 70.06, -65.88 55.78 04/28/2023 16:08:13 70.06, -65.80 55.77 2.76 1
7 04/28/2023 16:58:53 -69.92, 101.65 124.38 04/28/2023 16:57:43 -69.95, 101.67 124.35 2.92 70
8 05/01/2023 07:34:16 -70.11,-117.46 125.00 05/01/2023 07:35:13 -70.14,-117.45 124.97 3.46 57
9 05/01/2023 08:25:00 70.00, 50.01 54.88 05/01/2023 08:24:40 70.03, 50.04 54.91 3.30 20
10 05/01/2023 09:15:30 -69.28,-141.61 125.88 05/01/2023 09:14:21 -69.31,-143.30 125.79 66.60 69
11 05/03/2023 23:51:05 -70.11, -1.66 125.80 05/03/2023 23:51:40 -70.08, -1.65 125.83 3.08 35
12 05/04/2023 00:41:48 69.95, 165.88 54.03 05/04/2023 00:41:07 69.96, 165.83 54.05 2.76 41
13 05/06/2023 15:17:20 70.63, -54.01 53.99 05/06/2023 15:18:29 70.53, -52.75 53.85 48.13 69
14 05/06/2023 16:07:53 -70.06, 114.20 126.61 05/06/2023 16:08:06 -70.04, 114.18 126.64 2.54 13
15 05/06/2023 16:58:37 69.96, -78.34 53.28 05/06/2023 16:57:32 69.98, -78.26 53.30 3.59 65

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 4/22/2023
SNOs_Map_NOAA-21_LANDSAT-9_20230423.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 04/22/2023 in txt file.

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