Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 8 4.  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   ( -73.46, -86.15) 08/06/2023   05:49:17  ( -73.35, -85.55)   22.98                72
 08/06/2023   06:38:47   (  73.20,  81.75) 08/06/2023   06:38:45  (  73.21,  81.81)    1.97                 2
 08/06/2023   07:29:28   ( -73.05,-110.58) 08/06/2023   07:28:15  ( -73.09,-110.80)    8.64                73
 08/08/2023   21:15:09   (  73.26,-137.43) 08/08/2023   21:16:19  (  73.25,-137.50)    2.47                70
 08/08/2023   22:05:52   ( -73.20,  30.02) 08/08/2023   22:05:48  ( -73.19,  30.00)    1.61                 4
 08/08/2023   22:56:30   (  72.74,-161.67) 08/08/2023   22:55:20  (  72.83,-163.06)   46.97                70
 08/11/2023   12:42:15   ( -73.26, 170.82) 08/11/2023   12:43:22  ( -73.26, 170.75)    2.40                67
 08/11/2023   13:33:01   (  73.21, -21.74) 08/11/2023   13:32:48  (  73.22, -21.69)    2.05                13
 08/11/2023   14:23:34   ( -72.64, 146.80) 08/11/2023   14:22:25  ( -72.74, 144.99)   60.51                69
 08/14/2023   04:09:24   (  73.28, 119.04) 08/14/2023   04:10:22  (  73.26, 119.01)    3.09                58
 08/14/2023   05:00:07   ( -73.21, -73.49) 08/14/2023   04:59:51  ( -73.20, -73.48)    1.84                16
 08/16/2023   19:36:30   ( -73.29,  67.28) 08/16/2023   19:37:24  ( -73.27,  67.27)    2.83                54
 08/16/2023   20:27:15   (  73.20,-125.19) 08/16/2023   20:26:50  (  73.22,-125.18)    2.71                25