Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2021 11 8.  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)
 11/10/2021   09:19:54   (  71.43,  38.34) 11/10/2021   09:20:31  (  71.41,  38.31)    1.89                37
 11/10/2021   10:10:36   ( -71.35,-154.21) 11/10/2021   10:10:00  ( -71.35,-154.16)    1.88                36
 11/13/2021   01:36:11   (  71.46, 154.24) 11/13/2021   01:36:58  (  71.46, 154.28)    1.71                47
 11/13/2021   02:26:53   ( -71.38, -38.30) 11/13/2021   02:26:28  ( -71.35, -38.27)    3.24                25
 11/15/2021   17:52:27   (  71.46, -89.80) 11/15/2021   17:53:26  (  71.45, -89.85)    1.82                59
 11/15/2021   18:43:09   ( -71.37,  77.68) 11/15/2021   18:42:55  ( -71.40,  77.69)    3.40                14
 11/15/2021   19:33:41   (  70.68,-113.84) 11/15/2021   19:32:33  (  70.69,-115.77)   71.09                68
 11/18/2021   10:08:42   (  71.47,  26.14) 11/18/2021   10:09:52  (  71.49,  26.09)    3.05                70
 11/18/2021   10:59:24   ( -71.37,-166.37) 11/18/2021   10:59:22  ( -71.38,-166.45)    2.81                 2
 11/18/2021   11:50:03   (  71.06,   1.49) 11/18/2021   11:48:51  (  71.17,   0.85)   25.99                72
 11/21/2021   02:25:05   (  71.85, 141.39) 11/21/2021   02:26:15  (  71.73, 142.39)   37.07                70
 11/21/2021   03:15:40   ( -71.39, -50.45) 11/21/2021   03:15:49  ( -71.41, -50.51)    3.14                 9
 11/21/2021   04:06:24   (  71.34, 116.95) 11/21/2021   04:05:15  (  71.35, 117.04)    3.38                69