Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 2 8.  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)
 02/08/2020   11:04:12   ( -71.37,-170.69) 02/08/2020   11:05:19  ( -71.28,-168.20)   89.34                67
 02/08/2020   11:54:40   (  70.43,  -1.81) 02/08/2020   11:55:00  (  70.41,  -1.88)    3.14                20
 02/08/2020   12:45:22   ( -70.38, 165.59) 02/08/2020   12:44:29  ( -70.36, 165.66)    3.49                53
 02/11/2020   04:11:05   (  70.45, 114.06) 02/11/2020   04:11:28  (  70.46, 114.06)    0.71                23
 02/11/2020   05:01:46   ( -70.34, -78.44) 02/11/2020   05:00:58  ( -70.35, -78.47)    1.50                48
 02/13/2020   20:27:29   (  70.47,-130.08) 02/13/2020   20:27:56  (  70.46,-130.07)    2.13                27
 02/13/2020   21:18:10   ( -70.35,  37.43) 02/13/2020   21:17:26  ( -70.35,  37.41)    0.99                44
 02/16/2020   12:43:53   (  70.45, -14.14) 02/16/2020   12:44:25  (  70.47, -14.18)    2.34                32
 02/16/2020   13:34:35   ( -70.37, 153.30) 02/16/2020   13:33:55  ( -70.36, 153.30)    1.31                40
 02/19/2020   05:00:18   (  70.48, 101.71) 02/19/2020   05:00:54  (  70.49, 101.73)    1.06                36
 02/19/2020   05:51:00   ( -70.40, -90.84) 02/19/2020   05:50:24  ( -70.39, -90.78)    2.31                36
 02/21/2020   21:16:42   (  70.46,-142.36) 02/21/2020   21:17:24  (  70.47,-142.42)    2.62                42
 02/21/2020   22:07:24   ( -70.38,  25.10) 02/21/2020   22:06:54  ( -70.37,  25.06)    1.65                30