Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 10 24.  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   12:19:26   ( -70.65, 172.32) 10/25/2020   12:19:57  ( -70.67, 172.34)    1.93                31
 10/25/2020   13:10:10   (  70.56, -20.23) 10/25/2020   13:09:24  (  70.57, -20.16)    2.71                46
 10/28/2020   04:35:48   ( -70.69, -71.82) 10/28/2020   04:36:25  ( -70.66, -71.79)    3.36                37
 10/28/2020   05:26:31   (  70.56,  95.70) 10/28/2020   05:25:52  (  70.56,  95.71)    0.49                39
 10/30/2020   20:52:10   ( -70.67,  44.12) 10/30/2020   20:52:53  ( -70.70,  44.15)    3.17                43
 10/30/2020   21:42:53   (  70.55,-148.37) 10/30/2020   21:42:21  (  70.55,-148.43)    2.56                32
 11/02/2020   13:08:32   ( -70.66, 160.06) 11/02/2020   13:09:22  ( -70.68, 160.01)    2.83                50
 11/02/2020   13:59:16   (  70.60, -32.53) 11/02/2020   13:58:49  (  70.58, -32.50)    2.27                27
 11/05/2020   05:24:54   ( -70.71, -84.09) 11/05/2020   05:25:49  ( -70.72, -84.06)    1.86                55
 11/05/2020   06:15:37   (  70.60,  83.40) 11/05/2020   06:15:16  (  70.61,  83.43)    1.97                21