Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 5 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/05/2019   22:24:02   (   0.01,-137.19) (   0.58,-134.54)  301.03                80
 05/07/2019   10:45:51   (  -0.01,-137.21) (   0.56,-139.82)  297.89                80
 05/08/2019   10:24:27   (  -0.01,-137.20) (  -0.42,-135.29)  217.58                80
 05/09/2019   22:46:24   (   0.01,-137.17) (  -0.76,-140.60)  390.75                80
 05/10/2019   22:30:19   (   0.01,-137.16) (   0.23,-136.06)  124.65                80
 05/12/2019   10:52:09   (  -0.00,-137.17) (   0.91,-141.34)  475.09                80
 05/13/2019   10:30:44   (  -0.00,-137.16) (  -0.08,-136.81)   39.69                80
 05/15/2019   22:33:57   (   0.00,-137.10) (  -0.10,-137.58)   55.19                80
 05/16/2019   22:17:53   (   0.00,-137.08) (   0.89,-133.05)  459.58                80
 05/18/2019   10:39:42   (  -0.00,-137.09) (   0.26,-138.33)  140.95                80