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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/15/2020   10:09:06   (  -0.37,-128.36) (   0.06,-130.26)  216.86                80
 02/16/2020   09:52:50   (  -0.36,-128.37) (  -0.98,-125.69)  306.47                80
 02/17/2020   22:11:51   (   0.37,-128.41) (  -0.17,-130.93)  286.06                80
 02/18/2020   21:55:34   (   0.36,-128.43) (   0.81,-126.34)  237.14                80
 02/20/2020   10:14:25   (  -0.36,-128.42) (   0.36,-131.54)  355.51                80
 02/21/2020   09:58:09   (  -0.36,-128.43) (  -0.68,-126.96)  167.32                80
 02/22/2020   22:17:09   (   0.36,-128.46) (  -0.46,-132.20)  425.86                80
 02/23/2020   22:00:54   (   0.36,-128.47) (   0.57,-127.63)   97.04                80
 02/25/2020   10:22:24   (  -0.36,-128.47) (   0.60,-132.82)  495.65                80
 02/26/2020   10:01:51   (  -0.36,-128.48) (  -0.44,-128.25)   27.02                18
 02/28/2020   22:03:33   (   0.36,-128.51) (   0.29,-128.91)   44.70                80