Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 10 29.  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)
 10/30/2020   20:52:10   ( -70.70,  44.08) 10/30/2020   20:52:53  ( -70.69,  44.13)    2.64                43
 10/30/2020   21:42:53   (  70.57,-148.40) 10/30/2020   21:42:20  (  70.59,-148.37)    2.32                33
 11/02/2020   13:08:32   ( -70.70, 160.01) 11/02/2020   13:09:22  ( -70.67, 159.99)    3.22                50
 11/02/2020   13:59:15   (  70.57, -32.48) 11/02/2020   13:58:49  (  70.57, -32.52)    1.36                26
 11/02/2020   14:49:40   ( -69.59, 136.35) 11/02/2020   14:48:34  ( -69.63, 133.78)   99.56                66
 11/05/2020   05:24:54   ( -70.69, -84.07) 11/05/2020   05:25:50  ( -70.70, -84.08)    0.90                56
 11/05/2020   06:15:37   (  70.58,  83.43) 11/05/2020   06:15:17  (  70.60,  83.41)    2.53                20
 11/05/2020   07:06:06   ( -69.80,-108.04) 11/05/2020   07:04:58  ( -69.88,-109.99)   75.25                68
 11/07/2020   21:41:16   ( -70.75,  31.76) 11/07/2020   21:42:17  ( -70.73,  31.84)    3.51                61
 11/07/2020   22:31:59   (  70.64,-160.74) 11/07/2020   22:31:44  (  70.62,-160.67)    2.98                15
 11/07/2020   23:22:32   ( -70.06,   7.48) 11/07/2020   23:21:21  ( -70.13,   6.24)   47.44                71
 11/10/2020   13:57:38   ( -70.75, 147.68) 11/10/2020   13:58:45  ( -70.75, 147.76)    2.95                67
 11/10/2020   14:48:21   (  70.64, -44.84) 11/10/2020   14:48:12  (  70.64, -44.76)    2.82                 9
 11/10/2020   15:38:58   ( -70.28, 123.07) 11/10/2020   15:37:46  ( -70.32, 122.39)   25.67                72