Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 8 6.  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)
 08/06/2022   21:59:20   (  72.39,-151.08) 08/06/2022   22:00:31  (  72.28,-150.22)   31.35                71
 08/06/2022   22:49:57   ( -72.03,  16.95) 08/06/2022   22:50:03  ( -72.06,  17.01)    3.33                 6
 08/06/2022   23:40:42   (  71.92,-175.53) 08/06/2022   23:39:31  (  71.92,-175.60)    2.54                71
 08/09/2022   13:26:23   ( -72.49, 156.99) 08/09/2022   13:27:33  ( -72.39, 158.20)   42.47                70
 08/09/2022   14:17:01   (  72.03, -34.79) 08/09/2022   14:17:05  (  72.03, -34.80)    0.25                 4
 08/09/2022   15:07:44   ( -71.97, 132.64) 08/09/2022   15:06:34  ( -71.97, 132.73)    2.95                70
 08/12/2022   04:53:26   (  72.40, 105.43) 08/12/2022   04:54:37  (  72.30, 106.28)   30.97                71
 08/12/2022   05:44:03   ( -72.03, -86.52) 08/12/2022   05:44:10  ( -72.03, -86.57)    1.92                 7
 08/12/2022   06:34:48   (  71.93,  80.98) 08/12/2022   06:33:37  (  71.93,  80.90)    2.71                71
 08/14/2022   20:20:30   ( -72.49,  53.51) 08/14/2022   20:21:40  ( -72.40,  54.69)   40.98                70
 08/14/2022   21:11:08   (  72.04,-138.29) 08/14/2022   21:11:12  (  72.03,-138.32)    1.62                 4
 08/14/2022   22:01:51   ( -71.97,  29.17) 08/14/2022   22:00:41  ( -71.98,  29.22)    1.86                70
 08/17/2022   11:47:33   (  72.42,   1.92) 08/17/2022   11:48:44  (  72.29,   2.74)   31.11                71
 08/17/2022   12:38:11   ( -72.08, 169.91) 08/17/2022   12:38:16  ( -72.07, 169.99)    2.90                 5
 08/17/2022   13:28:55   (  71.94, -22.52) 08/17/2022   13:27:43  (  71.97, -22.55)    3.36                72
 08/20/2022   03:14:36   ( -72.50, -49.97) 08/20/2022   03:15:46  ( -72.38, -48.86)   39.43                70
 08/20/2022   04:05:14   (  72.06, 118.20) 08/20/2022   04:05:17  (  72.06, 118.21)    0.56                 3