Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 12 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)
 12/06/2022   10:14:53   ( -72.44,-153.84) 12/06/2022   10:16:01  ( -72.44,-153.84)    0.48                68
 12/06/2022   11:05:39   (  72.36,  13.62) 12/06/2022   11:05:28  (  72.36,  13.64)    1.14                11
 12/06/2022   11:56:14   ( -71.89,-178.15) 12/06/2022   11:55:03  ( -71.96,-179.42)   44.68                71
 12/09/2022   01:42:13   (  72.44, 154.36) 12/09/2022   01:43:01  (  72.42, 154.37)    1.36                48
 12/09/2022   02:32:56   ( -72.37, -38.19) 12/09/2022   02:32:30  ( -72.36, -38.12)    2.62                26
 12/11/2022   17:09:30   ( -72.39, 102.65) 12/11/2022   17:10:04  ( -72.41, 102.59)    3.26                34
 12/11/2022   18:00:16   (  72.32, -89.91) 12/11/2022   17:59:31  (  72.32, -89.94)    1.20                45
 12/14/2022   07:46:20   ( -73.22,-118.23) 12/14/2022   07:47:26  ( -73.09,-115.51)   88.75                66
 12/14/2022   08:36:51   (  72.41,  50.81) 12/14/2022   08:37:04  (  72.41,  50.83)    0.75                13
 12/14/2022   09:27:34   ( -72.33,-141.72) 12/14/2022   09:26:33  ( -72.35,-141.65)    3.07                61
 12/16/2022   23:13:26   (  72.50,-168.48) 12/16/2022   23:14:37  (  72.49,-168.42)    2.78                71
 12/17/2022   00:04:08   ( -72.37,  -0.90) 12/17/2022   00:04:07  ( -72.37,  -0.99)    3.25                 1
 12/17/2022   00:54:49   (  72.06, 167.02) 12/17/2022   00:53:37  (  72.11, 166.18)   29.36                72
 12/19/2022   14:40:43   ( -72.46, 139.81) 12/19/2022   14:41:39  ( -72.49, 139.83)    3.48                56
 12/19/2022   15:31:28   (  72.36, -52.68) 12/19/2022   15:31:06  (  72.39, -52.72)    3.37                22