Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 5 9.  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)
 05/11/2023   02:24:30   ( -72.99, -35.45) 05/11/2023   02:24:54  ( -73.01, -35.42)    2.83                24
 05/11/2023   03:15:15   (  72.91, 132.02) 05/11/2023   03:14:21  (  72.92, 132.05)    1.60                54
 05/13/2023   17:01:08   ( -73.80, 103.61) 05/13/2023   17:02:13  ( -73.70, 106.62)   94.47                65
 05/13/2023   17:51:38   (  72.99, -87.21) 05/13/2023   17:51:52  (  72.98, -87.22)    0.90                14
 05/13/2023   18:42:21   ( -72.89,  80.32) 05/13/2023   18:41:21  ( -72.92,  80.29)    3.05                60
 05/16/2023   08:28:07   (  73.43,  52.75) 05/16/2023   08:29:17  (  73.28,  54.00)   42.93                70
 05/16/2023   09:18:43   ( -72.97,-138.91) 05/16/2023   09:18:50  ( -73.01,-138.93)    3.62                 7
 05/16/2023   10:09:28   (  72.91,  28.53) 05/16/2023   10:08:17  (  72.91,  28.53)    0.14                71
 05/18/2023   23:55:08   ( -73.17,   1.61) 05/18/2023   23:56:19  ( -73.12,   1.92)   10.83                71
 05/19/2023   00:45:51   (  73.01, 169.27) 05/19/2023   00:45:46  (  73.02, 169.37)    3.59                 5
 05/19/2023   01:36:31   ( -72.75, -22.85) 05/19/2023   01:35:18  ( -72.80, -23.43)   20.19                73
 05/21/2023   15:22:13   (  73.06, -49.90) 05/21/2023   15:23:16  (  73.06, -49.95)    1.94                63
 05/21/2023   16:12:57   ( -72.99, 117.56) 05/21/2023   16:12:45  ( -73.00, 117.56)    0.25                12