Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 11 4.  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)
 11/05/2020   05:24:54   ( -70.68, -84.05) 11/05/2020   05:25:50  ( -70.71, -84.08)    3.04                56
 11/05/2020   06:15:38   (  70.61,  83.38) 11/05/2020   06:15:17  (  70.61,  83.42)    1.68                21
 11/05/2020   07:06:06   ( -69.84,-108.10) 11/05/2020   07:04:57  ( -69.89,-109.99)   72.35                69
 11/07/2020   21:41:16   ( -70.73,  31.80) 11/07/2020   21:42:17  ( -70.73,  31.85)    1.97                61
 11/07/2020   22:31:59   (  70.61,-160.70) 11/07/2020   22:31:44  (  70.63,-160.66)    3.27                15
 11/07/2020   23:22:32   ( -70.04,   7.51) 11/07/2020   23:21:22  ( -70.08,   6.17)   51.10                70
 11/10/2020   13:57:38   ( -70.72, 147.73) 11/10/2020   13:58:46  ( -70.70, 147.68)    2.86                68
 11/10/2020   14:48:21   (  70.61, -44.78) 11/10/2020   14:48:13  (  70.60, -44.83)    2.28                 8
 11/10/2020   15:38:58   ( -70.25, 123.11) 11/10/2020   15:37:46  ( -70.32, 122.39)   28.12                72
 11/13/2020   06:14:01   ( -70.77, -96.43) 11/13/2020   06:15:13  ( -70.77, -96.33)    3.76                72
 11/13/2020   07:04:43   (  70.61,  71.14) 11/13/2020   07:04:41  (  70.61,  71.07)    2.58                 2
 11/13/2020   07:55:24   ( -70.45,-121.29) 11/13/2020   07:54:11  ( -70.50,-121.46)    8.12                73
 11/15/2020   22:30:27   ( -70.97,  19.14) 11/15/2020   22:31:39  ( -70.89,  19.74)   23.44                72
 11/15/2020   23:21:05   (  70.66,-173.03) 11/15/2020   23:21:07  (  70.67,-172.95)    2.95                 2
 11/16/2020   00:11:47   ( -70.55,  -5.54) 11/16/2020   00:10:37  ( -70.57,  -5.48)    2.52                70