Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 12 13.  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   07:46:20   ( -73.20,-118.19) 12/14/2022   07:47:26  ( -73.08,-115.53)   86.66                66
 12/14/2022   08:36:51   (  72.38,  50.86) 12/14/2022   08:37:04  (  72.41,  50.83)    3.14                13
 12/14/2022   09:27:34   ( -72.31,-141.68) 12/14/2022   09:26:33  ( -72.34,-141.66)    3.14                61
 12/16/2022   23:13:25   (  72.47,-168.42) 12/16/2022   23:14:36  (  72.47,-168.45)    0.86                71
 12/17/2022   00:04:08   ( -72.39,  -0.95) 12/17/2022   00:04:05  ( -72.41,  -0.94)    1.53                 3
 12/17/2022   00:54:48   (  72.02, 167.08) 12/17/2022   00:53:37  (  72.05, 166.06)   34.99                71
 12/19/2022   14:40:43   ( -72.48, 139.76) 12/19/2022   14:41:38  ( -72.46, 139.76)    2.65                55
 12/19/2022   15:31:28   (  72.37, -52.72) 12/19/2022   15:31:05  (  72.36, -52.77)    2.25                23
 12/22/2022   06:08:03   (  72.47,  87.98) 12/22/2022   06:08:37  (  72.44,  87.99)    2.99                34
 12/22/2022   06:58:46   ( -72.38,-104.53) 12/22/2022   06:58:06  ( -72.38,-104.48)    1.58                40
 12/24/2022   20:44:51   (  73.23,-132.74) 12/24/2022   20:45:57  (  73.15,-130.04)   87.50                66
 12/24/2022   21:35:20   ( -72.43,  36.27) 12/24/2022   21:35:38  ( -72.45,  36.26)    2.88                18
 12/24/2022   22:26:05   (  72.33,-156.23) 12/24/2022   22:25:05  (  72.35,-156.29)    2.84                60