Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between LANDSAT-8 and NPP Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 4/4/2025
Index Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Date (NPP) Time (NPP) Lat,Lon (NPP) SZA (NPP ) Distance(km) Time Diff (sec)
1 04/04/2025 22:25:03 70.21,-159.84 64.10 04/04/2025 22:24:31 70.22,-159.88 64.12 2.50 32
2 04/04/2025 23:14:33 -70.09, 7.63 116.03 04/04/2025 23:15:12 -70.11, 7.62 116.02 1.87 39
3 04/07/2025 13:52:02 -70.40, 148.67 116.73 04/07/2025 13:50:49 -70.43, 148.24 116.67 16.56 73
4 04/07/2025 14:41:31 70.18, -43.99 63.06 04/07/2025 14:41:31 70.18, -44.06 63.06 2.66 0
5 04/07/2025 15:31:01 -70.07, 123.48 117.07 04/07/2025 15:32:12 -70.06, 123.44 117.08 1.77 71
6 04/10/2025 06:08:31 -70.23, -95.69 117.89 04/10/2025 06:07:45 -70.24, -95.71 117.87 1.98 46
7 04/10/2025 06:57:58 70.12, 71.80 61.99 04/10/2025 06:58:29 70.10, 71.82 61.98 1.75 31
8 04/12/2025 21:35:21 70.67,-146.79 61.57 04/12/2025 21:34:11 70.73,-148.04 61.67 46.46 70
9 04/12/2025 22:24:58 -70.18, 20.12 118.93 04/12/2025 22:24:44 -70.17, 20.16 118.93 1.39 14
10 04/12/2025 23:14:25 70.06,-172.39 60.96 04/12/2025 23:15:29 70.09,-172.41 60.98 3.30 64
11 04/15/2025 13:51:54 70.24, -31.53 60.19 04/15/2025 13:51:02 70.26, -31.53 60.21 1.56 52
12 04/15/2025 14:41:24 -70.14, 135.95 119.93 04/15/2025 14:41:43 -70.12, 136.00 119.95 2.35 19

Figure of LANDSAT-8 and NPP satellite orbits during SNOs since TLE Epoch: 4/4/2025
SNOs_Map_LANDSAT-8_NPP_20250404.jpg

Download SNOs between LANDSAT-8 and NPP since TLE EPOCH: 04/04/2025 in txt file.

Historial Predications of SNOs between LANDSAT-8 and NPP