Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 5 15.  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)
 05/16/2023   08:28:11   (  73.60,  52.34) 05/16/2023   08:29:19  (  73.50,  54.42)   66.35                68
 05/16/2023   09:18:44   ( -73.01,-138.98) 05/16/2023   09:18:56  ( -73.01,-138.95)    1.02                12
 05/16/2023   10:09:28   (  72.94,  28.48) 05/16/2023   10:08:22  (  72.92,  28.52)    2.29                66
 05/18/2023   23:55:13   ( -73.45,   0.96) 05/18/2023   23:56:23  ( -73.34,   2.31)   45.09                70
 05/19/2023   00:45:50   (  72.99, 169.31) 05/19/2023   00:45:55  (  72.98, 169.25)    2.14                 5
 05/19/2023   01:36:34   ( -72.94, -23.26) 05/19/2023   01:35:24  ( -72.92, -23.25)    2.30                70
 05/21/2023   15:22:15   (  73.21, -50.22) 05/21/2023   15:23:26  (  73.13, -49.86)   14.69                71
 05/21/2023   16:12:56   ( -73.00, 117.56) 05/21/2023   16:12:56  ( -73.01, 117.54)    1.70                 0
 05/21/2023   17:03:37   (  72.74, -74.57) 05/21/2023   17:02:25  (  72.81, -75.20)   22.35                72
 05/24/2023   06:49:18   ( -73.07,-101.64) 05/24/2023   06:50:28  ( -73.08,-101.71)    2.85                70
 05/24/2023   07:40:03   (  73.02,  65.78) 05/24/2023   07:39:55  (  72.99,  65.74)    3.29                 8
 05/24/2023   08:30:40   ( -72.60,-126.02) 05/24/2023   08:29:29  ( -72.66,-127.25)   41.71                71
 05/26/2023   22:16:25   (  73.10,-153.45) 05/26/2023   22:17:26  (  73.09,-153.46)    1.47                61
 05/26/2023   23:07:09   ( -73.03,  14.02) 05/26/2023   23:06:55  ( -73.03,  14.06)    1.36                14