Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 1 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 01/07/2022   10:19:01   (  -0.05,-128.27) (   0.12,-129.05)   88.59                80
 01/08/2022   10:03:18   (  -0.05,-128.29) (  -0.89,-124.60)  420.31                80
 01/09/2022   22:23:08   (   0.06,-128.31) (  -0.31,-130.03)  195.68                80
 01/10/2022   22:07:26   (   0.05,-128.33) (   0.70,-125.59)  313.18                80
 01/12/2022   10:27:07   (  -0.06,-128.35) (   0.52,-130.98)  299.39                80
 01/13/2022   10:11:25   (  -0.05,-128.36) (  -0.48,-126.53)  209.06                80
 01/14/2022   22:31:14   (   0.05,-128.38) (  -0.76,-131.95)  407.83                80
 01/15/2022   22:15:32   (   0.04,-128.38) (   0.25,-127.51)  100.29                80
 01/18/2022   10:16:50   (  -0.04,-128.40) (  -0.03,-128.45)    5.66                80