Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 8 24.  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)
 08/24/2020   19:30:59   (  71.59,-117.30) 08/24/2020   19:32:04  (  71.47,-114.52)   99.06                65
 08/24/2020   20:21:23   ( -70.59,  51.73) 08/24/2020   20:21:48  ( -70.60,  51.75)    1.14                25
 08/24/2020   21:12:07   (  70.49,-140.81) 08/24/2020   21:11:15  (  70.49,-140.77)    1.47                52
 08/27/2020   12:37:45   ( -70.59, 167.64) 08/27/2020   12:38:18  ( -70.57, 167.58)    3.25                33
 08/27/2020   13:28:29   (  70.50, -24.90) 08/27/2020   13:27:44  (  70.52, -24.85)    2.75                45
 08/30/2020   04:54:08   ( -70.60, -76.46) 08/30/2020   04:54:48  ( -70.59, -76.50)    1.75                40
 08/30/2020   05:44:52   (  70.50,  91.01) 08/30/2020   05:44:15  (  70.48,  90.97)    2.45                37
 09/01/2020   21:10:31   ( -70.60,  39.44) 09/01/2020   21:11:18  ( -70.62,  39.40)    1.89                47
 09/01/2020   22:01:15   (  70.51,-153.09) 09/01/2020   22:00:45  (  70.50,-153.12)    1.39                30
 09/04/2020   13:26:54   ( -70.61, 155.35) 09/04/2020   13:27:48  ( -70.63, 155.31)    2.76                54
 09/04/2020   14:17:38   (  70.51, -37.19) 09/04/2020   14:17:15  (  70.52, -37.22)    1.28                23