Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 2 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)
 02/19/2020   05:00:19   (  70.50, 101.68) 02/19/2020   05:00:52  (  70.49, 101.73)    2.05                33
 02/19/2020   05:51:00   ( -70.37, -90.79) 02/19/2020   05:50:22  ( -70.38, -90.80)    0.92                38
 02/21/2020   21:16:43   (  70.47,-142.37) 02/21/2020   21:17:21  (  70.45,-142.44)    3.14                38
 02/21/2020   22:07:25   ( -70.38,  25.08) 02/21/2020   22:06:50  ( -70.40,  25.11)    1.93                35
 02/24/2020   13:33:07   (  70.49, -26.50) 02/24/2020   13:33:48  (  70.47, -26.54)    2.91                41
 02/24/2020   14:23:49   ( -70.40, 140.96) 02/24/2020   14:23:17  ( -70.42, 141.02)    2.78                32
 02/27/2020   05:49:31   (  70.47,  89.44) 02/27/2020   05:50:16  (  70.48,  89.36)    3.37                45
 02/27/2020   06:40:13   ( -70.37,-103.09) 02/27/2020   06:39:46  ( -70.38,-103.16)    2.72                27
 02/29/2020   22:05:56   (  70.50,-154.70) 02/29/2020   22:06:44  (  70.49,-154.75)    2.01                48
 02/29/2020   22:56:38   ( -70.40,  12.77) 02/29/2020   22:56:14  ( -70.39,  12.73)    1.94                24