Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2021 11 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)
 11/10/2021   09:19:54   (  71.42,  38.36) 11/10/2021   09:20:31  (  71.42,  38.32)    1.53                37
 11/10/2021   10:10:36   ( -71.34,-154.18) 11/10/2021   10:10:00  ( -71.35,-154.15)    1.93                36
 11/13/2021   01:36:12   (  71.48, 154.20) 11/13/2021   01:36:58  (  71.47, 154.29)    3.41                46
 11/13/2021   02:26:53   ( -71.34, -38.24) 11/13/2021   02:26:28  ( -71.36, -38.26)    1.62                25
 11/15/2021   17:52:27   (  71.44, -89.78) 11/15/2021   17:53:25  (  71.46, -89.84)    2.83                58
 11/15/2021   18:43:09   ( -71.35,  77.70) 11/15/2021   18:42:55  ( -71.35,  77.62)    2.97                14
 11/15/2021   19:33:40   (  70.62,-113.73) 11/15/2021   19:32:33  (  70.65,-115.84)   77.77                67
 11/18/2021   10:08:45   (  71.51,  26.05) 11/18/2021   10:09:52  (  71.50,  26.11)    2.75                67
 11/18/2021   10:59:27   ( -71.42,-166.46) 11/18/2021   10:59:22  ( -71.39,-166.43)    2.78                 5
 11/18/2021   11:50:04   (  71.00,   1.58) 11/18/2021   11:48:53  (  71.07,   0.69)   32.85                71
 11/21/2021   02:25:06   (  71.74, 141.58) 11/21/2021   02:26:17  (  71.64, 142.23)   25.27                71
 11/21/2021   03:15:44   ( -71.43, -50.53) 11/21/2021   03:15:49  ( -71.43, -50.49)    1.75                 5
 11/21/2021   04:06:27   (  71.33, 116.95) 11/21/2021   04:05:16  (  71.32, 116.98)    2.02                71