Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 10 23.  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)
 10/25/2020   12:19:25   ( -70.64, 172.33) 10/25/2020   12:19:56  ( -70.67, 172.35)    3.36                31
 10/25/2020   13:10:09   (  70.56, -20.22) 10/25/2020   13:09:23  (  70.58, -20.15)    3.34                46
 10/28/2020   04:35:48   ( -70.68, -71.81) 10/28/2020   04:36:25  ( -70.67, -71.78)    2.27                37
 10/28/2020   05:26:31   (  70.55,  95.71) 10/28/2020   05:25:52  (  70.57,  95.72)    1.54                39
 10/30/2020   20:52:10   ( -70.67,  44.12) 10/30/2020   20:52:54  ( -70.66,  44.08)    2.51                44
 10/30/2020   21:42:53   (  70.55,-148.37) 10/30/2020   21:42:21  (  70.55,-148.42)    2.18                32
 11/02/2020   13:08:32   ( -70.67, 160.06) 11/02/2020   13:09:22  ( -70.69, 160.02)    3.29                50
 11/02/2020   13:59:16   (  70.60, -32.53) 11/02/2020   13:58:49  (  70.59, -32.49)    2.06                27
 11/05/2020   05:24:54   ( -70.71, -84.10) 11/05/2020   05:25:49  ( -70.73, -84.04)    2.79                55
 11/05/2020   06:15:37   (  70.60,  83.39) 11/05/2020   06:15:16  (  70.62,  83.44)    2.70                21