Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 5 11.  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)
 05/13/2023   17:01:07   ( -73.79, 103.63) 05/13/2023   17:02:12  ( -73.71, 106.64)   94.04                65
 05/13/2023   17:51:37   (  72.98, -87.18) 05/13/2023   17:51:51  (  72.99, -87.20)    1.53                14
 05/13/2023   18:42:21   ( -72.93,  80.23) 05/13/2023   18:41:20  ( -72.92,  80.30)    2.33                61
 05/16/2023   08:28:07   (  73.42,  52.77) 05/16/2023   08:29:17  (  73.29,  54.00)   41.86                70
 05/16/2023   09:18:44   ( -73.02,-139.00) 05/16/2023   09:18:50  ( -73.01,-138.93)    2.73                 6
 05/16/2023   10:09:28   (  72.90,  28.56) 05/16/2023   10:08:17  (  72.91,  28.54)    1.62                71
 05/18/2023   23:55:07   ( -73.11,   1.74) 05/18/2023   23:56:19  ( -73.11,   1.90)    5.02                72
 05/19/2023   00:45:51   (  73.00, 169.29) 05/19/2023   00:45:46  (  73.02, 169.35)    2.71                 5
 05/19/2023   01:36:31   ( -72.74, -22.83) 05/19/2023   01:35:18  ( -72.79, -23.45)   21.16                73
 05/21/2023   15:22:14   (  73.10, -49.99) 05/21/2023   15:23:15  (  73.09, -49.89)    3.74                61
 05/21/2023   16:12:57   ( -72.99, 117.58) 05/21/2023   16:12:45  ( -72.97, 117.52)    2.65                12
 05/21/2023   17:03:29   (  72.28, -73.63) 05/21/2023   17:02:22  (  72.34, -76.03)   81.63                67
 05/24/2023   06:49:19   ( -73.10,-101.71) 05/24/2023   06:50:12  ( -73.07,-101.68)    3.26                53
 05/24/2023   07:40:03   (  73.00,  65.82) 05/24/2023   07:39:38  (  73.02,  65.87)    3.16                25