Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 11 7.  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   ( -70.73,  31.79) 11/07/2020   21:42:17  ( -70.74,  31.85)    2.22                61
 11/07/2020   22:31:59   (  70.61,-160.70) 11/07/2020   22:31:45  (  70.59,-160.73)    2.64                14
 11/07/2020   23:22:32   ( -70.05,   7.50) 11/07/2020   23:21:22  ( -70.08,   6.17)   50.82                70
 11/10/2020   13:57:38   ( -70.73, 147.71) 11/10/2020   13:58:46  ( -70.70, 147.68)    3.12                68
 11/10/2020   14:48:21   (  70.61, -44.79) 11/10/2020   14:48:13  (  70.60, -44.82)    1.72                 8
 11/10/2020   15:38:58   ( -70.26, 123.10) 11/10/2020   15:37:46  ( -70.32, 122.40)   27.49                72
 11/13/2020   06:14:01   ( -70.78, -96.45) 11/13/2020   06:15:13  ( -70.77, -96.33)    4.63                72
 11/13/2020   07:04:43   (  70.62,  71.13) 11/13/2020   07:04:41  (  70.61,  71.08)    1.84                 2
 11/13/2020   07:55:24   ( -70.47,-121.31) 11/13/2020   07:54:11  ( -70.50,-121.46)    6.72                73
 11/15/2020   22:30:26   ( -70.99,  19.11) 11/15/2020   22:31:38  ( -70.89,  19.74)   25.34                72
 11/15/2020   23:21:04   (  70.63,-172.97) 11/15/2020   23:21:08  (  70.62,-173.03)    2.43                 4
 11/16/2020   00:11:46   ( -70.52,  -5.48) 11/16/2020   00:10:38  ( -70.51,  -5.56)    3.11                68
 11/18/2020   14:46:52   ( -71.20, 134.67) 11/18/2020   14:48:02  ( -71.11, 135.97)   47.81                70
 11/18/2020   15:37:27   (  70.69, -57.15) 11/18/2020   15:37:35  (  70.67, -57.06)    3.42                 8
 11/18/2020   16:28:09   ( -70.58, 110.35) 11/18/2020   16:27:05  ( -70.57, 110.41)    2.71                64