Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 11 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)
 11/07/2020   21:41:16   ( -70.72,  31.81) 11/07/2020   21:42:17  ( -70.74,  31.86)    3.37                61
 11/07/2020   22:31:59   (  70.60,-160.68) 11/07/2020   22:31:45  (  70.59,-160.72)    1.49                14
 11/07/2020   23:22:32   ( -70.04,   7.52) 11/07/2020   23:21:22  ( -70.09,   6.18)   51.16                70
 11/10/2020   13:57:38   ( -70.72, 147.73) 11/10/2020   13:58:46  ( -70.71, 147.69)    1.57                68
 11/10/2020   14:48:21   (  70.60, -44.77) 11/10/2020   14:48:13  (  70.61, -44.81)    1.98                 8
 11/10/2020   15:38:58   ( -70.24, 123.12) 11/10/2020   15:37:46  ( -70.33, 122.41)   28.43                72
 11/13/2020   06:14:02   ( -70.82, -96.52) 11/13/2020   06:15:13  ( -70.78, -96.32)    8.41                71
 11/13/2020   07:04:43   (  70.60,  71.15) 11/13/2020   07:04:41  (  70.62,  71.09)    2.98                 2
 11/13/2020   07:55:23   ( -70.45,-121.29) 11/13/2020   07:54:11  ( -70.46,-121.52)    8.77                72
 11/15/2020   22:30:27   ( -71.03,  19.05) 11/15/2020   22:31:38  ( -70.90,  19.75)   28.91                71
 11/15/2020   23:21:05   (  70.66,-173.02) 11/15/2020   23:21:08  (  70.63,-173.02)    3.49                 3
 11/16/2020   00:11:47   ( -70.56,  -5.54) 11/16/2020   00:10:37  ( -70.58,  -5.46)    3.60                70
 11/18/2020   14:46:52   ( -71.18, 134.71) 11/18/2020   14:48:02  ( -71.12, 135.98)   46.45                70
 11/18/2020   15:37:27   (  70.67, -57.11) 11/18/2020   15:37:35  (  70.69, -57.05)    3.29                 8
 11/18/2020   16:28:09   ( -70.56, 110.38) 11/18/2020   16:27:05  ( -70.58, 110.43)    3.22                64