Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 6 26.  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)
 06/28/2022   06:13:30   ( -72.71, -95.62) 06/28/2022   06:14:37  ( -72.62, -93.20)   80.92                67
 06/28/2022   07:04:02   (  71.95,  73.21) 06/28/2022   07:04:15  (  71.94,  73.22)    0.62                13
 06/28/2022   07:54:45   ( -71.88,-119.35) 06/28/2022   07:53:44  ( -71.88,-119.26)    3.12                61
 06/30/2022   21:40:32   (  72.58,-147.09) 06/30/2022   21:41:40  (  72.49,-145.20)   64.06                68
 06/30/2022   22:31:04   ( -71.96,  21.46) 06/30/2022   22:31:18  ( -71.94,  21.45)    1.47                14
 06/30/2022   23:21:49   (  71.85,-171.03) 06/30/2022   23:20:45  (  71.85,-171.07)    1.17                64
 07/03/2022   13:07:35   ( -72.59, 161.15) 07/03/2022   13:08:43  ( -72.53, 163.12)   66.06                68
 07/03/2022   13:58:09   (  71.93, -30.23) 07/03/2022   13:58:19  (  71.95, -30.28)    3.26                10
 07/03/2022   14:48:52   ( -71.86, 137.20) 07/03/2022   14:47:49  ( -71.84, 137.16)    3.08                63
 07/06/2022   04:34:38   (  72.47, 109.65) 07/06/2022   04:35:47  (  72.36, 111.06)   48.69                69
 07/06/2022   05:25:12   ( -71.95, -82.00) 07/06/2022   05:25:23  ( -71.93, -82.07)    2.68                11
 07/06/2022   06:15:58   (  71.89,  85.41) 07/06/2022   06:14:49  (  71.89,  85.49)    2.76                69
 07/08/2022   20:01:41   ( -72.49,  57.87) 07/08/2022   20:02:50  ( -72.39,  59.35)   50.81                69
 07/08/2022   20:52:18   (  71.98,-133.81) 07/08/2022   20:52:23  (  71.97,-133.77)    1.87                 5
 07/08/2022   21:43:00   ( -71.86,  33.72) 07/08/2022   21:41:53  ( -71.86,  33.68)    1.37                67