Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 2 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 02/21/2020   09:58:09   (  -0.36,-128.41) (  -0.70,-126.97)  165.56                80
 02/22/2020   22:17:08   (   0.36,-128.45) (  -0.50,-132.19)  427.45                80
 02/23/2020   22:00:53   (   0.36,-128.45) (   0.54,-127.62)   95.04                80
 02/25/2020   10:22:23   (  -0.36,-128.44) (   0.63,-132.81)  498.91                80
 02/26/2020   10:00:48   (  -0.36,-128.44) (  -0.41,-128.24)   23.20                80
 02/28/2020   22:03:32   (   0.36,-128.47) (   0.26,-128.90)   48.44                80
 02/29/2020   21:47:16   (   0.36,-128.47) (   1.30,-124.32)  473.35                80
 03/02/2020   10:08:47   (  -0.35,-128.45) (  -0.12,-129.52)  121.68                80
 03/03/2020   09:47:11   (  -0.35,-128.44) (  -1.16,-124.94)  399.45                80
 03/04/2020   22:08:50   (   0.35,-128.45) (  -0.02,-130.17)  195.69                80
 03/05/2020   21:52:34   (   0.34,-128.45) (   0.96,-125.59)  325.18                80