Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 11 11.  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)
 11/13/2020   06:14:01   ( -70.79, -96.47) 11/13/2020   06:15:13  ( -70.77, -96.33)    5.39                72
 11/13/2020   07:04:43   (  70.62,  71.12) 11/13/2020   07:04:41  (  70.62,  71.08)    1.37                 2
 11/13/2020   07:55:24   ( -70.47,-121.33) 11/13/2020   07:54:11  ( -70.50,-121.46)    5.80                73
 11/15/2020   22:30:26   ( -71.00,  19.09) 11/15/2020   22:31:38  ( -70.89,  19.74)   26.37                72
 11/15/2020   23:21:04   (  70.63,-172.97) 11/15/2020   23:21:08  (  70.63,-173.02)    1.71                 4
 11/16/2020   00:11:46   ( -70.53,  -5.50) 11/16/2020   00:10:38  ( -70.51,  -5.56)    2.88                68
 11/18/2020   14:46:52   ( -71.22, 134.65) 11/18/2020   14:48:02  ( -71.12, 135.97)   48.96                70
 11/18/2020   15:37:26   (  70.64, -57.07) 11/18/2020   15:37:36  (  70.63, -57.13)    2.45                10
 11/18/2020   16:28:08   ( -70.54, 110.41) 11/18/2020   16:27:06  ( -70.52, 110.34)    3.40                62
 11/21/2020   07:03:18   ( -71.43,-109.82) 11/21/2020   07:04:26  ( -71.33,-107.79)   72.67                68
 11/21/2020   07:53:48   (  70.66,  58.83) 11/21/2020   07:54:03  (  70.68,  58.83)    3.17                15
 11/21/2020   08:44:30   ( -70.55,-133.69) 11/21/2020   08:43:33  ( -70.58,-133.69)    2.95                57
 11/23/2020   23:19:44   ( -71.65,   5.71) 11/23/2020   23:20:50  ( -71.55,   8.44)   96.59                66
 11/24/2020   00:10:10   (  70.67, 174.72) 11/24/2020   00:10:31  (  70.68, 174.71)    0.78                21
 11/24/2020   01:00:52   ( -70.56, -17.79) 11/24/2020   01:00:01  ( -70.57, -17.81)    1.48                51