Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 8 5.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 08/06/2023   05:48:05   ( -73.47, -86.16) 08/06/2023   05:49:17  ( -73.35, -85.55)   23.23                72
 08/06/2023   06:38:47   (  73.20,  81.75) 08/06/2023   06:38:45  (  73.21,  81.81)    2.02                 2
 08/06/2023   07:29:28   ( -73.05,-110.59) 08/06/2023   07:28:15  ( -73.09,-110.80)    8.39                73
 08/08/2023   21:15:09   (  73.26,-137.44) 08/08/2023   21:16:19  (  73.26,-137.49)    2.07                70
 08/08/2023   22:05:52   ( -73.20,  30.01) 08/08/2023   22:05:48  ( -73.19,  30.01)    1.52                 4
 08/08/2023   22:56:30   (  72.74,-161.67) 08/08/2023   22:55:20  (  72.84,-163.05)   46.74                70
 08/11/2023   12:42:15   ( -73.27, 170.82) 08/11/2023   12:43:22  ( -73.27, 170.77)    1.66                67
 08/11/2023   13:33:01   (  73.21, -21.75) 08/11/2023   13:32:48  (  73.23, -21.67)    3.00                13
 08/11/2023   14:23:34   ( -72.65, 146.79) 08/11/2023   14:22:25  ( -72.74, 145.01)   59.97                69
 08/14/2023   04:09:24   (  73.29, 119.03) 08/14/2023   04:10:22  (  73.27, 119.03)    1.58                58
 08/14/2023   05:00:07   ( -73.22, -73.50) 08/14/2023   04:59:51  ( -73.21, -73.45)    1.70                16
 08/16/2023   19:36:30   ( -73.30,  67.27) 08/16/2023   19:37:24  ( -73.29,  67.31)    1.70                54
 08/16/2023   20:27:15   (  73.20,-125.20) 08/16/2023   20:26:51  (  73.19,-125.24)    1.71                24