Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 11 5.  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, -84.06) 11/05/2020   05:25:50  ( -70.70, -84.09)    2.19                56
 11/05/2020   06:15:38   (  70.61,  83.37) 11/05/2020   06:15:17  (  70.61,  83.42)    1.70                21
 11/05/2020   07:06:07   ( -69.84,-108.11) 11/05/2020   07:04:58  ( -69.89,-109.99)   72.34                69
 11/07/2020   21:41:16   ( -70.73,  31.79) 11/07/2020   21:42:17  ( -70.73,  31.84)    1.71                61
 11/07/2020   22:31:59   (  70.61,-160.70) 11/07/2020   22:31:44  (  70.63,-160.66)    2.77                15
 11/07/2020   23:22:32   ( -70.05,   7.50) 11/07/2020   23:21:22  ( -70.08,   6.16)   51.15                70
 11/10/2020   13:57:38   ( -70.72, 147.72) 11/10/2020   13:58:45  ( -70.75, 147.75)    3.38                67
 11/10/2020   14:48:21   (  70.61, -44.78) 11/10/2020   14:48:13  (  70.59, -44.84)    2.57                 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, -96.34)    3.52                72
 11/13/2020   07:04:43   (  70.61,  71.14) 11/13/2020   07:04:41  (  70.61,  71.07)    2.79                 2
 11/13/2020   07:55:24   ( -70.45,-121.29) 11/13/2020   07:54:11  ( -70.50,-121.46)    8.13                73
 11/15/2020   22:30:27   ( -70.97,  19.15) 11/15/2020   22:31:39  ( -70.89,  19.73)   23.12                72
 11/15/2020   23:21:06   (  70.66,-173.02) 11/15/2020   23:21:08  (  70.67,-172.95)    2.84                 2
 11/16/2020   00:11:48   ( -70.55,  -5.53) 11/16/2020   00:10:38  ( -70.56,  -5.48)    2.33                70
 11/18/2020   14:46:52   ( -71.17, 134.72) 11/18/2020   14:48:02  ( -71.11, 135.97)   45.27                70
 11/18/2020   15:37:27   (  70.66, -57.10) 11/18/2020   15:37:35  (  70.67, -57.06)    2.33                 8
 11/18/2020   16:28:09   ( -70.55, 110.40) 11/18/2020   16:27:05  ( -70.57, 110.41)    2.72                64