Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 7 6.  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)
 07/08/2023   04:40:15   ( -73.18, -68.98) 07/08/2023   04:41:10  ( -73.19, -68.88)    3.66                55
 07/08/2023   05:31:00   (  73.08,  98.53) 07/08/2023   05:30:38  (  73.06,  98.49)    3.31                22
 07/10/2023   20:07:25   (  73.17,-120.71) 07/10/2023   20:08:13  (  73.16,-120.70)    0.80                48
 07/10/2023   20:58:08   ( -73.09,  46.79) 07/10/2023   20:57:42  ( -73.09,  46.80)    0.87                26
 07/13/2023   11:34:32   ( -73.17,-172.47) 07/13/2023   11:35:16  ( -73.18,-172.43)    1.44                44
 07/13/2023   12:25:17   (  73.08,  -4.95) 07/13/2023   12:24:43  (  73.09,  -4.96)    1.00                34
 07/16/2023   03:01:42   (  73.17, 135.78) 07/16/2023   03:02:18  (  73.15, 135.77)    2.34                36
 07/16/2023   03:52:25   ( -73.09, -56.73) 07/16/2023   03:51:47  ( -73.09, -56.72)    0.42                38
 07/18/2023   18:28:50   ( -73.19,  83.99) 07/18/2023   18:29:21  ( -73.19,  84.09)    3.16                31
 07/18/2023   19:19:35   (  73.10,-108.49) 07/18/2023   19:18:48  (  73.10,-108.46)    1.08                47