Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 7 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/15/2019   10:52:33   (  -0.02,-137.20) (   0.93,-141.39)  477.53                80
 07/16/2019   10:31:09   (  -0.02,-137.20) (  -0.08,-136.86)   38.39                80
 07/18/2019   22:34:21   (   0.03,-137.16) (  -0.07,-137.63)   53.70                80
 07/19/2019   22:18:17   (   0.02,-137.16) (   0.94,-133.10)  462.05                80
 07/21/2019   10:37:25   (  -0.03,-137.16) (   0.22,-138.38)  137.59                80
 07/22/2019   10:21:21   (  -0.02,-137.15) (  -0.79,-133.84)  377.82                80
 07/23/2019   22:40:37   (   0.03,-137.11) (  -0.43,-139.14)  231.09                80
 07/24/2019   22:24:33   (   0.03,-137.10) (   0.59,-134.61)  284.02                80
 07/26/2019   10:43:41   (  -0.03,-137.10) (   0.57,-139.88)  316.60                80
 07/27/2019   10:27:36   (  -0.03,-137.08) (  -0.44,-135.35)  197.83                80