Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 8 10.  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)
 08/12/2022   04:53:26   (  72.43, 105.38) 08/12/2022   04:54:36  (  72.33, 106.34)   34.24                70
 08/12/2022   05:44:03   ( -72.06, -86.57) 08/12/2022   05:44:09  ( -72.05, -86.53)    1.82                 6
 08/12/2022   06:34:48   (  71.95,  80.93) 08/12/2022   06:33:36  (  71.96,  80.96)    1.26                72
 08/14/2022   20:20:29   ( -72.48,  53.54) 08/14/2022   20:21:40  ( -72.36,  54.63)   38.75                71
 08/14/2022   21:11:07   (  72.03,-138.26) 08/14/2022   21:11:11  (  72.06,-138.27)    3.35                 4
 08/14/2022   22:01:50   ( -71.95,  29.20) 08/14/2022   22:00:41  ( -71.94,  29.16)    2.04                69
 08/17/2022   11:47:32   (  72.41,   1.95) 08/17/2022   11:48:43  (  72.30,   2.77)   30.09                71
 08/17/2022   12:38:10   ( -72.07, 169.92) 08/17/2022   12:38:15  ( -72.08, 170.01)    3.12                 5
 08/17/2022   13:28:55   (  71.98, -22.60) 08/17/2022   13:27:42  (  71.99, -22.52)    2.78                73
 08/20/2022   03:14:35   ( -72.45, -49.87) 08/20/2022   03:15:46  ( -72.37, -48.86)   34.74                71
 08/20/2022   04:05:14   (  72.06, 118.20) 08/20/2022   04:05:17  (  72.06, 118.22)    0.49                 3
 08/20/2022   04:55:57   ( -71.97, -74.32) 08/20/2022   04:54:47  ( -71.95, -74.34)    2.64                70
 08/22/2022   18:41:37   (  72.40,-101.51) 08/22/2022   18:42:48  (  72.29,-100.77)   27.59                71
 08/22/2022   19:32:15   ( -72.05,  66.49) 08/22/2022   19:32:20  ( -72.07,  66.48)    3.01                 5
 08/22/2022   20:23:00   (  71.97,-126.05) 08/22/2022   20:21:47  (  71.97,-126.06)    0.22                73