Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 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)
 07/08/2022   20:01:41   ( -72.46,  57.93) 07/08/2022   20:02:51  ( -72.37,  59.30)   47.57                70
 07/08/2022   20:52:18   (  71.94,-133.74) 07/08/2022   20:52:24  (  71.96,-133.79)    2.59                 6
 07/08/2022   21:43:01   ( -71.89,  33.68) 07/08/2022   21:41:53  ( -71.89,  33.73)    1.99                68
 07/11/2022   11:28:43   (  72.32,   6.46) 07/11/2022   11:29:54  (  72.20,   7.25)   30.13                71
 07/11/2022   12:19:20   ( -71.97, 174.48) 07/11/2022   12:19:26  ( -71.98, 174.49)    1.66                 6
 07/11/2022   13:10:06   (  71.90, -18.09) 07/11/2022   13:08:53  (  71.88, -18.03)    2.67                73
 07/14/2022   02:55:46   ( -72.35, -45.33) 07/14/2022   02:56:57  ( -72.22, -44.47)   32.59                71
 07/14/2022   03:46:26   (  71.98, 122.70) 07/14/2022   03:46:27  (  71.96, 122.71)    2.10                 1
 07/14/2022   04:37:08   ( -71.88, -69.79) 07/14/2022   04:35:56  ( -71.90, -69.75)    3.24                72
 07/16/2022   18:22:48   (  72.17, -96.71) 07/16/2022   18:23:59  (  72.14, -96.37)   12.33                71
 07/16/2022   19:13:28   ( -71.96,  71.00) 07/16/2022   19:13:30  ( -71.98,  70.98)    1.90                 2
 07/16/2022   20:04:11   (  71.74,-121.28) 07/16/2022   20:02:58  (  71.82,-121.65)   15.47                73
 07/19/2022   09:49:51   ( -72.20,-148.51) 07/19/2022   09:51:02  ( -72.15,-148.11)   14.99                71
 07/19/2022   10:40:34   (  71.98,  19.21) 07/19/2022   10:40:30  (  71.99,  19.26)    1.69                 4