Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 7 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)
 07/27/2019   10:24:56   (  -0.02,-137.20) (  -0.43,-135.35)  210.80                80
 07/28/2019   22:46:53   (   0.03,-137.19) (  -0.73,-140.66)  395.25                80
 07/29/2019   22:30:49   (   0.03,-137.18) (   0.28,-136.13)  120.15                80
 07/31/2019   10:49:56   (  -0.04,-137.16) (   0.93,-141.39)  482.01                80
 08/01/2019   10:33:52   (  -0.04,-137.15) (  -0.08,-136.86)   32.97                80
 08/03/2019   22:34:25   (   0.04,-137.11) (  -0.06,-137.63)   59.82                80
 08/04/2019   22:18:20   (   0.04,-137.09) (   0.95,-133.10)  454.92                80
 08/06/2019   10:37:27   (  -0.04,-137.07) (   0.26,-138.36)  148.09                80
 08/07/2019   10:21:23   (  -0.04,-137.05) (  -0.75,-133.83)  366.27                80
 08/08/2019   22:40:40   (   0.05,-137.01) (  -0.40,-139.14)  242.32                80
 08/09/2019   22:24:36   (   0.05,-136.99) (   0.61,-134.61)  271.72                80