Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-C
TLE Epoch: 2021 7 21.  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)
 08/03/2021   20:49:53   (  74.17,-140.54) 08/03/2021   20:50:59  (  74.14,-137.60)   89.32                66
 08/03/2021   21:40:35   ( -74.06,  27.07) 08/03/2021   21:41:43  ( -74.01,  29.41)   71.86                68
 08/03/2021   22:31:17   (  73.93,-165.30) 08/03/2021   22:32:26  (  73.87,-163.60)   52.98                69
 08/03/2021   23:21:59   ( -73.82,   2.30) 08/03/2021   23:23:10  ( -73.75,   3.43)   36.04                71
 08/04/2021   00:12:40   (  73.64, 170.04) 08/04/2021   00:13:53  (  73.60, 170.43)   12.90                73
 08/04/2021   01:03:22   ( -73.52, -22.38) 08/04/2021   01:04:36  ( -73.52, -22.43)    1.49                74
 08/04/2021   01:54:07   (  73.54, 144.89) 08/04/2021   01:55:16  (  73.53, 144.92)    1.79                69