Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 5 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/28/2019   10:52:17   (   0.01,-137.20) (   0.92,-141.36)  474.14                80
 05/29/2019   10:30:52   (   0.01,-137.19) (  -0.08,-136.83)   41.37                80
 05/31/2019   22:34:05   (  -0.01,-137.15) (  -0.09,-137.61)   51.88                80
 06/01/2019   22:18:01   (  -0.00,-137.14) (   0.91,-133.07)  463.19                80
 06/03/2019   10:39:49   (  -0.00,-137.14) (   0.29,-138.34)  137.83                80
 06/04/2019   10:18:25   (  -0.00,-137.12) (  -0.77,-133.82)  376.44                80
 06/05/2019   22:40:22   (   0.00,-137.06) (  -0.45,-139.12)  234.25                80
 06/06/2019   22:24:17   (  -0.00,-137.04) (   0.55,-134.59)  279.86                80
 06/08/2019   10:46:05   (   0.00,-137.03) (   0.64,-139.85)  321.99                80
 06/09/2019   10:24:41   (   0.01,-137.00) (  -0.36,-135.32)  191.59                80