Simultaneous Nadir Overpasses (SNOs) Predictions

Prediction of SNOs between FY3D and LANDSAT-8 Satellite Orbit:

Table of predicted SNOs for the next 14.0 days since TLE Epoch: 9/14/2025
Index Date (FY3D) Time (FY3D) Lat,Lon (FY3D) SZA (FY3D ) Date (LANDSAT-8) Time (LANDSAT-8) Lat,Lon (LANDSAT-8) SZA (LANDSAT-8 ) Distance(km) Time Diff (sec)
1 09/15/2025 02:12:03 76.22, 156.00 73.40 09/15/2025 02:12:19 76.25, 156.00 73.43 3.65 16
2 09/15/2025 03:02:46 -76.19, -36.58 106.62 09/15/2025 03:01:48 -76.18, -36.61 106.65 1.93 58
3 09/17/2025 17:38:09 -76.82, 102.26 105.08 09/17/2025 17:39:13 -76.74, 105.86 104.99 92.14 64
4 09/17/2025 18:28:42 76.26, -88.24 74.48 09/17/2025 18:28:49 76.24, -88.16 74.46 3.10 7
5 09/17/2025 19:19:24 -76.18, 79.37 105.58 09/17/2025 19:18:18 -76.17, 79.24 105.61 3.75 66
6 09/20/2025 09:54:40 -76.47,-140.42 104.32 09/20/2025 09:55:52 -76.34,-139.63 104.40 25.22 72
7 09/20/2025 10:45:21 76.26, 27.66 75.53 09/20/2025 10:45:19 76.27, 27.80 75.54 3.61 2
8 09/20/2025 11:36:02 -76.13,-164.54 104.57 09/20/2025 11:34:48 -76.20,-164.80 104.53 9.66 74
9 09/23/2025 02:11:15 -76.29, -23.83 103.41 09/23/2025 02:12:23 -76.30, -23.86 103.39 1.56 68
10 09/23/2025 03:01:59 76.23, 143.72 76.55 09/23/2025 03:01:50 76.23, 143.56 76.55 4.29 9
11 09/23/2025 03:52:33 -75.77, -47.36 103.80 09/23/2025 03:51:26 -75.82, -50.08 103.90 74.28 67
12 09/25/2025 18:27:54 -76.29, 92.06 102.35 09/25/2025 18:28:53 -76.30, 92.03 102.33 1.34 59
13 09/25/2025 19:18:38 76.24,-100.41 77.62 09/25/2025 19:18:20 76.23,-100.57 77.60 4.22 18
14 09/28/2025 10:44:32 -76.30,-152.07 101.29 09/28/2025 10:45:22 -76.29,-152.13 101.30 2.22 50
15 09/28/2025 11:35:16 76.25, 15.44 78.69 09/28/2025 11:34:48 76.26, 15.42 78.69 1.49 28

Figure of FY3D and LANDSAT-8 satellite orbits during SNOs since TLE Epoch: 9/14/2025
SNOs_Map_FY3D_LANDSAT-8_20250915.jpg

Download SNOs between FY3D and LANDSAT-8 since TLE EPOCH: 09/14/2025 in txt file.

Historial Predications of SNOs between FY3D and LANDSAT-8