Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 2 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/07/2020   22:03:45   (   0.02,-128.03) (  -0.06,-128.27)   27.57                80
 02/08/2020   21:42:10   (  -0.00,-128.00) (   0.98,-123.70)  490.90                80
 02/10/2020   10:03:39   (   0.00,-127.93) (   0.23,-128.88)  108.27                80
 02/11/2020   09:47:24   (  -0.00,-127.90) (  -0.81,-124.31)  409.43                80
 02/12/2020   22:09:03   (   0.00,-127.85) (  -0.39,-129.54)  192.05                80
 02/13/2020   21:47:27   (   0.01,-127.82) (   0.65,-124.96)  325.43                80
 02/15/2020   10:08:57   (  -0.00,-127.74) (   0.55,-130.15)  274.51                80
 02/16/2020   09:52:41   (   0.00,-127.70) (  -0.49,-125.58)  242.89                80
 02/17/2020   22:14:21   (  -0.01,-127.65) (  -0.70,-130.81)  359.05                80
 02/18/2020   21:52:44   (  -0.01,-127.61) (   0.29,-126.22)  157.89                80
 02/20/2020   10:14:14   (   0.00,-127.53) (   0.86,-131.42)  443.21                80