Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 4 29.  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)
 05/01/2020   13:13:53   ( -70.61, 158.25) 05/01/2020   13:14:43  ( -70.63, 158.26)    2.47                50
 05/01/2020   14:04:37   (  70.50, -34.27) 05/01/2020   14:04:10  (  70.52, -34.26)    2.29                27
 05/01/2020   14:55:02   ( -69.55, 134.50) 05/01/2020   14:53:55  ( -69.59, 132.06)   94.69                67
 05/04/2020   05:30:17   ( -70.61, -85.85) 05/04/2020   05:31:11  ( -70.60, -85.90)    1.97                54
 05/04/2020   06:21:01   (  70.50,  81.63) 05/04/2020   06:20:38  (  70.49,  81.58)    2.38                23
 05/04/2020   07:11:28   ( -69.66,-109.75) 05/04/2020   07:10:20  ( -69.73,-111.87)   82.07                68
 05/06/2020   21:46:40   ( -70.61,  30.05) 05/06/2020   21:47:37  ( -70.63,  30.02)    1.99                57
 05/06/2020   22:37:24   (  70.51,-162.47) 05/06/2020   22:37:04  (  70.51,-162.51)    1.66                20
 05/06/2020   23:27:53   ( -69.77,   5.99) 05/06/2020   23:26:45  ( -69.81,   4.12)   72.13                68
 05/09/2020   14:03:04   ( -70.62, 145.95) 05/09/2020   14:04:04  ( -70.65, 145.93)    3.37                60
 05/09/2020   14:53:48   (  70.51, -46.57) 05/09/2020   14:53:31  (  70.53, -46.60)    2.36                17
 05/09/2020   15:44:19   ( -69.88, 121.73) 05/09/2020   15:43:10  ( -69.94, 120.18)   59.84                69
 05/12/2020   06:19:29   ( -70.68, -98.24) 05/12/2020   06:20:31  ( -70.67, -98.17)    2.78                62
 05/12/2020   07:10:12   (  70.52,  69.33) 05/12/2020   07:09:58  (  70.55,  69.30)    3.04                14