Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 7 18.  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)
 07/18/2023   18:28:49   ( -73.18,  84.02) 07/18/2023   18:29:20  ( -73.19,  84.09)    2.40                31
 07/18/2023   19:19:34   (  73.08,-108.44) 07/18/2023   19:18:47  (  73.11,-108.43)    3.54                47
 07/21/2023   09:55:59   (  73.18,  32.27) 07/21/2023   09:56:21  (  73.17,  32.30)    1.71                22
 07/21/2023   10:46:42   ( -73.12,-160.27) 07/21/2023   10:45:50  ( -73.10,-160.20)    2.84                52
 07/24/2023   00:32:37   (  73.94, 171.43) 07/24/2023   00:33:43  (  73.84, 174.33)   90.35                66
 07/24/2023   01:23:06   ( -73.18, -19.47) 07/24/2023   01:23:23  ( -73.20, -19.39)    3.13                17
 07/24/2023   02:13:52   (  73.12, 147.96) 07/24/2023   02:12:50  (  73.11, 148.07)    3.69                62
 07/26/2023   15:59:40   ( -73.74, 120.17) 07/26/2023   16:00:48  ( -73.69, 122.25)   65.06                68
 07/26/2023   16:50:16   (  73.19, -71.25) 07/26/2023   16:50:23  (  73.18, -71.18)    2.69                 7
 07/26/2023   17:40:59   ( -73.12,  96.22) 07/26/2023   17:39:52  ( -73.11,  96.33)    3.73                67
 07/29/2023   07:26:42   (  73.42,  69.19) 07/29/2023   07:27:53  (  73.33,  69.74)   20.32                71
 07/29/2023   08:17:21   ( -73.15,-122.89) 07/29/2023   08:17:24  ( -73.16,-122.96)    2.66                 3
 07/29/2023   09:08:04   (  72.94,  44.86) 07/29/2023   09:06:52  (  73.01,  44.38)   17.37                72
 07/31/2023   22:53:45   ( -73.23,  17.87) 07/31/2023   22:54:56  ( -73.24,  17.81)    2.28                71
 07/31/2023   23:44:31   (  73.18,-174.70) 07/31/2023   23:44:22  (  73.19,-174.64)    2.53                 9