Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-A
TLE Epoch: 2019 12 22.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(METOP-A) METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 12/22/2019   03:37:47   (  75.00, 113.06) 12/22/2019   03:36:39  (  74.98, 113.11)    2.34                68
 12/22/2019   04:28:30   ( -74.98, -79.56) 12/22/2019   04:27:21  ( -74.97, -79.59)    0.82                69
 12/22/2019   05:19:15   (  74.95,  87.84) 12/22/2019   05:18:01  (  74.96,  87.71)    4.12                74
 12/22/2019   06:09:58   ( -74.92,-104.78) 12/22/2019   06:08:44  ( -74.91,-105.11)    9.83                74
 12/22/2019   07:00:39   (  74.70,  63.15) 12/22/2019   06:59:28  (  74.70,  61.66)   43.79                71
 12/22/2019   07:51:21   ( -74.63,-129.34) 12/22/2019   07:50:11  ( -74.65,-131.16)   53.59                70
 12/22/2019   08:42:02   (  74.40,  38.57) 12/22/2019   08:40:56  (  74.39,  35.51)   91.78                66