Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 7 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/26/2019   10:46:21   (  -0.02,-137.20) (   0.58,-139.88)  305.30                80
 07/27/2019   10:24:56   (  -0.02,-137.20) (  -0.43,-135.35)  210.45                80
 07/28/2019   22:46:53   (   0.03,-137.18) (  -0.73,-140.66)  396.25                80
 07/29/2019   22:30:49   (   0.03,-137.17) (   0.28,-136.13)  119.00                80
 07/31/2019   10:49:56   (  -0.04,-137.15) (   0.93,-141.39)  483.00                80
 08/01/2019   10:33:52   (  -0.04,-137.14) (  -0.08,-136.86)   31.77                80
 08/03/2019   22:34:25   (   0.04,-137.09) (  -0.05,-137.64)   61.84                80
 08/04/2019   22:18:19   (   0.04,-137.07) (   0.90,-133.09)  452.81                80
 08/06/2019   10:37:27   (  -0.04,-137.05) (   0.25,-138.37)  150.03                80
 08/07/2019   10:21:23   (  -0.04,-137.03) (  -0.76,-133.84)  364.17                80