Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 1 9.  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)
 01/10/2022   04:40:54   ( -72.42, -73.26) 01/10/2022   04:42:00  ( -72.32, -70.61)   89.92                66
 01/10/2022   05:31:23   (  71.54,  95.73) 01/10/2022   05:31:40  (  71.54,  95.67)    2.09                17
 01/10/2022   06:22:07   ( -71.47, -96.84) 01/10/2022   06:21:09  ( -71.47, -96.81)    1.34                58
 01/12/2022   20:07:58   (  72.10,-124.41) 01/12/2022   20:09:07  (  72.00,-122.95)   51.50                69
 01/12/2022   20:58:33   ( -71.57,  43.91) 01/12/2022   20:58:43  ( -71.56,  43.94)    1.96                10
 01/12/2022   21:49:17   (  71.46,-148.59) 01/12/2022   21:48:10  (  71.46,-148.58)    0.47                67
 01/15/2022   11:35:02   ( -71.87,-175.74) 01/15/2022   11:36:13  ( -71.79,-175.06)   25.03                71
 01/15/2022   12:25:42   (  71.56,  -7.85) 01/15/2022   12:25:43  (  71.54,  -7.85)    3.11                 1
 01/15/2022   13:16:25   ( -71.44, 159.68) 01/15/2022   13:15:13  ( -71.42, 159.59)    3.70                72
 01/18/2022   03:02:08   (  71.67, 132.88) 01/18/2022   03:03:16  (  71.66, 132.95)    2.91                68
 01/18/2022   03:52:51   ( -71.54, -59.58) 01/18/2022   03:52:46  ( -71.54, -59.60)    0.98                 5
 01/18/2022   04:43:29   (  71.12, 108.46) 01/18/2022   04:42:18  (  71.17, 107.44)   37.22                71
 01/20/2022   18:29:17   ( -71.64,  81.15) 01/20/2022   18:30:19  ( -71.66,  81.20)    2.55                62
 01/20/2022   19:20:01   (  71.54,-111.36) 01/20/2022   19:19:46  (  71.56,-111.33)    2.11                15