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: 3/26/2025
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 03/27/2025 06:45:25 -70.14,-105.04 112.61 03/27/2025 06:45:55 -70.16,-105.02 112.60 3.00 30
2 03/27/2025 07:36:09 70.04, 62.42 67.27 03/27/2025 07:35:22 70.06, 62.47 67.30 3.06 47
3 03/29/2025 22:11:39 70.49,-157.13 66.72 03/29/2025 22:12:49 70.41,-156.42 66.61 27.98 70
4 03/29/2025 23:02:16 -70.12, 10.77 113.69 03/29/2025 23:02:22 -70.13, 10.82 113.67 2.58 6
5 03/29/2025 23:52:59 69.97, 178.30 66.15 03/29/2025 23:51:50 69.97, 178.23 66.16 2.69 69
6 04/01/2025 14:28:25 70.18, -40.86 65.36 04/01/2025 14:29:19 70.19, -40.85 65.36 1.25 54
7 04/01/2025 15:19:07 -70.06, 126.63 114.78 04/01/2025 15:18:49 -70.08, 126.63 114.76 2.07 18
8 04/01/2025 16:09:36 69.18, -64.77 64.29 04/01/2025 16:08:29 69.25, -66.86 64.43 82.70 67
9 04/04/2025 06:45:16 70.15, 74.96 64.30 04/04/2025 06:45:44 70.17, 75.02 64.31 2.92 28
10 04/04/2025 07:35:58 -70.03,-117.54 115.85 04/04/2025 07:35:15 -70.01,-117.58 115.86 2.82 43
11 04/06/2025 22:11:27 -70.43, 23.00 116.42 04/06/2025 22:12:39 -70.36, 23.55 116.52 21.92 72
12 04/06/2025 23:02:06 70.10,-169.17 63.22 04/06/2025 23:02:09 70.08,-169.22 63.20 2.84 3
13 04/06/2025 23:52:48 -69.97, -1.66 116.93 04/06/2025 23:51:39 -69.97, -1.73 116.92 2.66 69

Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 3/26/2025
SNOs_Map_NOAA-21_LANDSAT-9_20250326.jpg

Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 03/26/2025 in txt file.

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