Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 12 12.  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)
 12/14/2022   07:46:19   ( -73.18,-118.14) 12/14/2022   07:47:25  ( -73.10,-115.49)   85.98                66
 12/14/2022   08:36:51   (  72.42,  50.80) 12/14/2022   08:37:03  (  72.43,  50.87)    2.82                12
 12/14/2022   09:27:33   ( -72.29,-141.64) 12/14/2022   09:26:33  ( -72.31,-141.72)    3.28                60
 12/16/2022   23:13:26   (  72.50,-168.49) 12/16/2022   23:14:36  (  72.49,-168.41)    2.98                70
 12/17/2022   00:04:08   ( -72.38,  -0.92) 12/17/2022   00:04:06  ( -72.37,  -1.00)    2.80                 2
 12/17/2022   00:54:48   (  72.01, 167.11) 12/17/2022   00:53:37  (  72.06, 166.09)   35.54                71
 12/19/2022   14:40:43   ( -72.46, 139.80) 12/19/2022   14:41:38  ( -72.47, 139.79)    0.80                55
 12/19/2022   15:31:28   (  72.36, -52.68) 12/19/2022   15:31:05  (  72.37, -52.74)    2.64                23
 12/22/2022   06:08:03   (  72.46,  88.01) 12/22/2022   06:08:37  (  72.45,  88.01)    0.78                34
 12/22/2022   06:58:45   ( -72.37,-104.50) 12/22/2022   06:58:05  ( -72.39,-104.47)    2.85                40
 12/24/2022   20:44:50   (  73.22,-132.72) 12/24/2022   20:45:56  (  73.15,-130.04)   86.75                66
 12/24/2022   21:35:20   ( -72.47,  36.19) 12/24/2022   21:35:37  ( -72.45,  36.26)    2.71                17
 12/24/2022   22:26:05   (  72.37,-156.31) 12/24/2022   22:25:04  (  72.35,-156.29)    2.79                61