Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 6 10.  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)
 06/10/2020   18:10:29   (  70.58, -95.76) 06/10/2020   18:11:29  (  70.61, -95.78)    3.07                60
 06/10/2020   19:01:10   ( -70.47,  71.74) 06/10/2020   19:00:59  ( -70.49,  71.68)    3.12                11
 06/10/2020   19:51:44   (  69.84,-119.97) 06/10/2020   19:50:35  (  69.90,-121.53)   60.03                69
 06/13/2020   10:26:53   (  70.61,  20.11) 06/13/2020   10:28:00  (  70.59,  20.07)    2.55                67
 06/13/2020   11:17:34   ( -70.49,-172.39) 06/13/2020   11:17:30  ( -70.48,-172.46)    3.29                 4
 06/13/2020   12:08:12   (  70.08,  -4.43) 06/13/2020   12:07:01  (  70.16,  -5.29)   33.76                71
 06/16/2020   02:43:18   (  70.69, 135.89) 06/16/2020   02:44:29  (  70.68, 136.08)    7.19                71
 06/16/2020   03:33:58   ( -70.51, -56.51) 06/16/2020   03:34:00  ( -70.51, -56.53)    0.70                 2
 06/16/2020   04:24:40   (  70.32, 111.11) 06/16/2020   04:23:28  (  70.36, 110.88)    9.75                72
 06/18/2020   18:59:45   (  70.93,-108.60) 06/18/2020   19:00:56  (  70.82,-107.83)   30.49                71
 06/18/2020   19:50:21   ( -70.54,  59.36) 06/18/2020   19:50:29  ( -70.55,  59.40)    1.85                 8
 06/18/2020   20:41:05   (  70.45,-133.19) 06/18/2020   20:39:56  (  70.44,-133.12)    2.91                69
 06/21/2020   11:16:13   (  71.16,   6.91) 06/21/2020   11:17:22  (  71.06,   8.43)   55.95                69
 06/21/2020   12:06:44   ( -70.51, 175.32) 06/21/2020   12:07:00  ( -70.52, 175.24)    3.65                16
 06/21/2020   12:57:28   (  70.43, -17.24) 06/21/2020   12:56:27  (  70.41, -17.28)    1.90                61