Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 2 3.  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)
 02/05/2020   18:47:45   ( -71.23,  73.65) 02/05/2020   18:48:53  ( -71.14,  75.70)   74.26                68
 02/05/2020   19:38:16   (  70.45,-117.74) 02/05/2020   19:38:31  (  70.44,-117.73)    1.11                15
 02/05/2020   20:28:57   ( -70.34,  49.75) 02/05/2020   20:28:01  ( -70.32,  49.74)    1.46                56
 02/08/2020   11:04:12   ( -71.34,-170.64) 02/08/2020   11:05:19  ( -71.24,-168.25)   86.04                67
 02/08/2020   11:54:40   (  70.46,  -1.86) 02/08/2020   11:54:58  (  70.43,  -1.86)    3.61                18
 02/08/2020   12:45:21   ( -70.35, 165.64) 02/08/2020   12:44:28  ( -70.32, 165.62)    3.06                53
 02/11/2020   03:20:38   ( -71.45, -54.94) 02/11/2020   03:21:44  ( -71.34, -52.21)   97.82                66
 02/11/2020   04:11:05   (  70.48, 114.01) 02/11/2020   04:11:25  (  70.47, 114.09)    3.03                20
 02/11/2020   05:01:46   ( -70.36, -78.48) 02/11/2020   05:00:55  ( -70.36, -78.43)    1.84                51
 02/13/2020   20:27:29   (  70.45,-130.04) 02/13/2020   20:27:53  (  70.46,-130.05)    1.25                24
 02/13/2020   21:18:11   ( -70.37,  37.40) 02/13/2020   21:17:23  ( -70.35,  37.43)    2.22                48
 02/16/2020   12:43:54   (  70.47, -14.17) 02/16/2020   12:44:20  (  70.49, -14.12)    3.14                26
 02/16/2020   13:34:35   ( -70.33, 153.36) 02/16/2020   13:33:51  ( -70.33, 153.28)    3.00                44