Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 6 9.  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   (  70.60, -95.78) 06/10/2020   18:11:29  (  70.59, -95.81)    1.30                60
 06/10/2020   19:01:10   ( -70.49,  71.71) 06/10/2020   19:00:59  ( -70.48,  71.66)    2.44                11
 06/10/2020   19:51:44   (  69.85,-120.00) 06/10/2020   19:50:35  (  69.88,-121.56)   59.64                69
 06/13/2020   10:26:53   (  70.62,  20.08) 06/13/2020   10:27:59  (  70.63,  20.13)    1.69                66
 06/13/2020   11:17:34   ( -70.51,-172.41) 06/13/2020   11:17:29  ( -70.52,-172.41)    0.88                 5
 06/13/2020   12:08:12   (  70.09,  -4.45) 06/13/2020   12:07:01  (  70.14,  -5.31)   32.84                71
 06/16/2020   02:43:18   (  70.71, 135.86) 06/16/2020   02:44:29  (  70.66, 136.06)    8.84                71
 06/16/2020   03:33:58   ( -70.53, -56.54) 06/16/2020   03:33:59  ( -70.55, -56.47)    3.54                 1
 06/16/2020   04:24:40   (  70.33, 111.08) 06/16/2020   04:23:28  (  70.34, 110.86)    8.52                72
 06/18/2020   18:59:46   (  70.94,-108.63) 06/18/2020   19:00:57  (  70.80,-107.85)   32.48                71
 06/18/2020   19:50:22   ( -70.55,  59.33) 06/18/2020   19:50:30  ( -70.53,  59.37)    2.82                 8
 06/18/2020   20:41:05   (  70.42,-133.14) 06/18/2020   20:39:57  (  70.43,-133.14)    0.98                68
 06/21/2020   11:16:13   (  71.18,   6.88) 06/21/2020   11:17:22  (  71.05,   8.41)   57.26                69
 06/21/2020   12:06:44   ( -70.53, 175.29) 06/21/2020   12:07:00  ( -70.51, 175.22)    3.30                16
 06/21/2020   12:57:28   (  70.45, -17.27) 06/21/2020   12:56:26  (  70.45, -17.22)    2.19                62