Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 7 17.  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)
 07/17/2019   05:08:14   (  70.24, 100.14) 07/17/2019   05:07:02  (  70.27,  99.95)    7.92                72
 07/19/2019   19:43:20   (  70.68,-119.30) 07/19/2019   19:44:32  (  70.62,-118.94)   14.88                72
 07/19/2019   20:33:59   ( -70.42,  48.43) 07/19/2019   20:34:03  ( -70.45,  48.44)    3.21                 4
 07/19/2019   21:24:42   (  70.30,-144.07) 07/19/2019   21:23:31  (  70.29,-144.14)    2.75                71
 07/22/2019   11:59:49   (  70.79,  -3.60) 07/22/2019   12:01:00  (  70.69,  -2.95)   26.42                71
 07/22/2019   12:50:26   ( -70.43, 164.30) 07/22/2019   12:50:33  ( -70.41, 164.28)    1.65                 7
 07/22/2019   13:41:09   (  70.31, -28.20) 07/22/2019   13:40:00  (  70.31, -28.23)    1.23                69
 07/25/2019   04:16:17   (  70.85, 112.19) 07/25/2019   04:17:28  (  70.76, 113.04)   33.00                71
 07/25/2019   05:06:53   ( -70.44, -79.82) 07/25/2019   05:07:02  ( -70.43, -79.81)    0.49                 9
 07/25/2019   05:57:36   (  70.32,  87.67) 07/25/2019   05:56:29  (  70.33,  87.68)    0.97                67
 07/27/2019   20:32:45   (  70.97,-132.12) 07/27/2019   20:33:55  (  70.83,-130.97)   44.63                70
 07/27/2019   21:23:19   ( -70.45,  36.05) 07/27/2019   21:23:30  ( -70.45,  36.10)    1.89                11
 07/27/2019   22:14:02   (  70.33,-156.46) 07/27/2019   22:12:57  (  70.34,-156.42)    1.88                65
 07/30/2019   12:49:13   (  71.03, -16.34) 07/30/2019   12:50:22  (  70.95, -14.90)   52.99                69
 07/30/2019   13:39:45   ( -70.40, 152.00) 07/30/2019   13:40:00  ( -70.41, 151.92)    2.96                15
 07/30/2019   14:30:29   (  70.34, -40.59) 07/30/2019   14:29:26  (  70.35, -40.52)    2.81                63