Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 7 25.  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)
 07/25/2019   05:57:36   (  70.32,  87.68) 07/25/2019   05:56:32  (  70.31,  87.64)    1.62                64
 07/27/2019   20:32:49   (  71.12,-132.38) 07/27/2019   20:33:57  (  71.01,-130.70)   61.80                68
 07/27/2019   21:23:20   ( -70.45,  36.04) 07/27/2019   21:23:35  ( -70.47,  36.10)    2.92                15
 07/27/2019   22:14:02   (  70.33,-156.45) 07/27/2019   22:13:02  (  70.31,-156.48)    1.89                60
 07/30/2019   12:49:18   (  71.29, -16.78) 07/30/2019   12:50:25  (  71.15, -14.61)   79.04                67
 07/30/2019   13:39:46   ( -70.46, 151.91) 07/30/2019   13:40:06  ( -70.44, 151.93)    2.58                20
 07/30/2019   14:30:29   (  70.34, -40.58) 07/30/2019   14:29:33  (  70.34, -40.57)    0.28                56
 08/02/2019   05:05:48   (  71.45,  98.81) 08/02/2019   05:06:53  (  71.35, 101.59)   99.12                65
 08/02/2019   05:56:12   ( -70.42, -92.14) 08/02/2019   05:56:38  ( -70.43, -92.20)    2.75                26
 08/02/2019   06:46:56   (  70.35,  75.29) 08/02/2019   06:46:05  (  70.33,  75.28)    2.15                51
 08/04/2019   22:12:39   ( -70.43,  23.72) 08/04/2019   22:13:10  ( -70.45,  23.69)    2.17                31
 08/04/2019   23:03:23   (  70.36,-168.84) 08/04/2019   23:02:37  (  70.34,-168.83)    2.19                46
 08/07/2019   14:29:05   ( -70.45, 139.59) 08/07/2019   14:29:42  ( -70.43, 139.53)    2.81                37
 08/07/2019   15:19:49   (  70.37, -52.98) 08/07/2019   15:19:08  (  70.37, -52.91)    2.72                41