Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 6 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)
 06/06/2020   10:17:57   (  -0.00,-137.18) (  -0.75,-133.73)  392.24                80
 06/07/2020   22:39:53   (   0.01,-137.16) (  -0.41,-139.04)  213.34                80
 06/08/2020   22:23:49   (   0.01,-137.15) (   0.63,-134.51)  302.23                80
 06/10/2020   10:45:36   (  -0.01,-137.14) (   0.56,-139.77)  299.64                80
 06/11/2020   10:24:11   (  -0.01,-137.13) (  -0.42,-135.23)  215.71                80
 06/12/2020   22:46:07   (   0.00,-137.11) (  -0.73,-140.54)  390.48                80
 06/13/2020   22:30:02   (   0.00,-137.10) (   0.25,-136.00)  124.79                80
 06/15/2020   10:51:49   (  -0.00,-137.08) (   0.94,-141.26)  477.49                80
 06/16/2020   10:30:24   (  -0.00,-137.06) (  -0.10,-136.74)   37.40                80
 06/18/2020   22:33:34   (   0.00,-137.01) (  -0.13,-137.49)   55.59                80