Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2021 11 12.  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)
 11/13/2021   01:36:11   (  71.45, 154.26) 11/13/2021   01:36:58  (  71.45, 154.26)    0.74                47
 11/13/2021   02:26:53   ( -71.37, -38.28) 11/13/2021   02:26:28  ( -71.34, -38.30)    3.41                25
 11/15/2021   17:52:28   (  71.46, -89.82) 11/15/2021   17:53:26  (  71.45, -89.86)    2.42                58
 11/15/2021   18:43:10   ( -71.38,  77.66) 11/15/2021   18:42:55  ( -71.39,  77.67)    1.42                15
 11/15/2021   19:33:41   (  70.64,-113.77) 11/15/2021   19:32:33  (  70.69,-115.78)   74.44                68
 11/18/2021   10:08:45   (  71.48,  26.10) 11/18/2021   10:09:53  (  71.49,  26.09)    0.85                68
 11/18/2021   10:59:27   ( -71.39,-166.41) 11/18/2021   10:59:23  ( -71.38,-166.45)    1.87                 4
 11/18/2021   11:50:05   (  71.02,   1.54) 11/18/2021   11:48:54  (  71.06,   0.68)   31.61                71
 11/21/2021   02:25:06   (  71.76, 141.54) 11/21/2021   02:26:17  (  71.64, 142.22)   27.63                71
 11/21/2021   03:15:43   ( -71.41, -50.49) 11/21/2021   03:15:49  ( -71.42, -50.50)    1.72                 6
 11/21/2021   04:06:26   (  71.31, 117.01) 11/21/2021   04:05:16  (  71.31, 116.97)    1.65                70
 11/23/2021   18:41:30   (  72.15,-103.23) 11/23/2021   18:42:37  (  72.04,-101.19)   70.82                67
 11/23/2021   19:32:00   ( -71.43,  65.43) 11/23/2021   19:32:16  ( -71.46,  65.44)    3.19                16
 11/23/2021   20:22:43   (  71.33,-127.08) 11/23/2021   20:21:43  (  71.35,-127.09)    1.60                60