Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 8 14.  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)
 08/15/2019   15:18:25   ( -70.45, 127.25) 08/15/2019   15:19:03  ( -70.45, 127.24)    0.52                38
 08/15/2019   16:09:09   (  70.35, -65.29) 08/15/2019   16:08:30  (  70.35, -65.27)    0.99                39
 08/18/2019   07:34:51   ( -70.47,-116.89) 08/18/2019   07:35:32  ( -70.44,-116.89)    2.58                41
 08/18/2019   08:25:35   (  70.37,  50.58) 08/18/2019   08:24:59  (  70.34,  50.60)    3.27                36
 08/20/2019   23:51:17   ( -70.43,  -0.95) 08/20/2019   23:52:02  ( -70.44,  -1.02)    2.74                45
 08/21/2019   00:42:01   (  70.33, 166.52) 08/21/2019   00:41:29  (  70.33, 166.47)    2.06                32
 08/23/2019   16:07:44   ( -70.45, 114.91) 08/23/2019   16:08:32  ( -70.43, 114.85)    3.28                48
 08/23/2019   16:58:28   (  70.35, -77.62) 08/23/2019   16:57:58  (  70.37, -77.59)    3.10                30
 08/26/2019   08:24:11   ( -70.46,-129.23) 08/26/2019   08:25:01  ( -70.47,-129.21)    0.89                50
 08/26/2019   09:14:55   (  70.36,  38.25) 08/26/2019   09:14:28  (  70.36,  38.27)    0.98                27