Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 8 22.  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)
 08/22/2020   04:55:44   (  70.47, 103.31) 08/22/2020   04:54:45  (  70.48, 103.34)    1.73                59
 08/24/2020   19:30:58   (  71.57,-117.28) 08/24/2020   19:32:03  (  71.49,-114.48)   99.00                65
 08/24/2020   20:21:22   ( -70.57,  51.76) 08/24/2020   20:21:48  ( -70.57,  51.71)    1.98                26
 08/24/2020   21:12:06   (  70.48,-140.78) 08/24/2020   21:11:15  (  70.46,-140.81)    1.76                51
 08/27/2020   12:37:46   ( -70.63, 167.58) 08/27/2020   12:38:18  ( -70.61, 167.64)    2.79                32
 08/27/2020   13:28:29   (  70.48, -24.87) 08/27/2020   13:27:45  (  70.50, -24.88)    2.14                44
 08/30/2020   04:54:08   ( -70.58, -76.43) 08/30/2020   04:54:49  ( -70.59, -76.51)    3.52                41
 08/30/2020   05:44:52   (  70.48,  91.04) 08/30/2020   05:44:16  (  70.48,  90.97)    2.62                36
 09/01/2020   21:10:32   ( -70.63,  39.40) 09/01/2020   21:11:19  ( -70.63,  39.42)    1.10                47
 09/01/2020   22:01:15   (  70.54,-153.14) 09/01/2020   22:00:45  (  70.51,-153.10)    3.04                30
 09/04/2020   13:26:54   ( -70.64, 155.30) 09/04/2020   13:27:49  ( -70.61, 155.27)    2.93                55
 09/04/2020   14:17:38   (  70.54, -37.23) 09/04/2020   14:17:15  (  70.55, -37.17)    2.37                23