Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-C
TLE Epoch: 2021 12 25.  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)
 01/07/2022   23:23:31   (  74.29,-178.03) 01/07/2022   23:24:39  (  74.21,-175.69)   71.12                68
 01/08/2022   00:14:13   ( -74.10, -10.25) 01/08/2022   00:15:23  ( -74.08,  -8.70)   47.34                70
 01/08/2022   01:04:55   (  73.92, 157.51) 01/08/2022   01:06:08  (  73.85, 158.07)   18.92                73
 01/08/2022   01:55:38   ( -73.79, -34.85) 01/08/2022   01:56:51  ( -73.76, -34.81)    2.67                73
 01/08/2022   02:46:23   (  73.75, 132.55) 01/08/2022   02:47:31  (  73.78, 132.56)    3.33                68