Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 7 28.  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)
 07/30/2019   12:49:17   (  71.20, -16.63) 07/30/2019   12:50:25  (  71.09, -14.70)   70.59                68
 07/30/2019   13:39:46   ( -70.43, 151.96) 07/30/2019   13:40:05  ( -70.43, 151.93)    1.16                19
 07/30/2019   14:30:30   (  70.36, -40.61) 07/30/2019   14:29:32  (  70.33, -40.58)    3.27                58
 08/02/2019   05:05:45   (  71.32,  99.05) 08/02/2019   05:06:52  (  71.23, 101.40)   84.55                67
 08/02/2019   05:56:12   ( -70.44, -92.18) 08/02/2019   05:56:34  ( -70.47, -92.14)    3.06                22
 08/02/2019   06:46:55   (  70.32,  75.34) 08/02/2019   06:46:02  (  70.31,  75.27)    2.47                53
 08/04/2019   22:12:39   ( -70.46,  23.69) 08/04/2019   22:13:05  ( -70.46,  23.72)    1.34                26
 08/04/2019   23:03:22   (  70.33,-168.80) 08/04/2019   23:02:32  (  70.35,-168.79)    2.73                50
 08/07/2019   14:29:06   ( -70.47, 139.55) 08/07/2019   14:29:36  ( -70.46, 139.59)    2.59                30
 08/07/2019   15:19:49   (  70.34, -52.93) 08/07/2019   15:19:03  (  70.35, -52.92)    0.51                46
 08/10/2019   06:45:32   ( -70.44,-104.51) 08/10/2019   06:46:07  ( -70.46,-104.53)    2.27                35
 08/10/2019   07:36:16   (  70.36,  62.93) 08/10/2019   07:35:34  (  70.34,  62.95)    1.64                42