Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-C
TLE Epoch: 2021 1 28.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(METOP-C) METOP-C Lat/Lon    Distance(km)  Time Diff(sec)
 02/10/2021   21:41:15   ( -73.94,  26.07) 02/10/2021   21:42:20  ( -73.89,  29.25)   98.16                65
 02/10/2021   22:31:55   (  73.67,-165.97) 02/10/2021   22:33:04  (  73.63,-164.05)   60.25                69
 02/10/2021   23:22:38   ( -73.64,   1.40) 02/10/2021   23:23:48  ( -73.58,   3.16)   55.52                70
 02/11/2021   00:13:19   (  73.42, 169.24) 02/11/2021   00:14:31  (  73.35, 169.99)   24.98                72
 02/11/2021   01:04:02   ( -73.40, -23.39) 02/11/2021   01:05:14  ( -73.36, -22.68)   23.03                72
 02/11/2021   01:54:44   (  73.22, 144.32) 02/11/2021   01:55:55  (  73.23, 144.39)    2.68                71