Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 9 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/04/2019   22:34:27   (   0.02,-137.19) (  -0.08,-137.60)   47.06                80
 09/05/2019   22:18:23   (   0.02,-137.19) (   0.95,-133.07)  468.80                80
 09/07/2019   10:40:10   (  -0.03,-137.18) (   0.26,-138.34)  131.98                80
 09/08/2019   10:18:45   (  -0.03,-137.17) (  -0.77,-133.81)  383.53                80
 09/09/2019   22:40:42   (   0.03,-137.15) (  -0.42,-139.11)  223.25                80
 09/10/2019   22:24:37   (   0.03,-137.14) (   0.60,-134.58)  292.08                80
 09/12/2019   10:46:25   (  -0.03,-137.13) (   0.60,-139.84)  309.35                80
 09/13/2019   10:25:00   (  -0.03,-137.12) (  -0.42,-135.31)  205.77                80
 09/14/2019   22:46:56   (   0.03,-137.09) (  -0.76,-140.61)  401.63                80
 09/15/2019   22:30:52   (   0.03,-137.07) (   0.27,-136.08)  113.26                80
 09/17/2019   10:49:59   (  -0.03,-137.05) (   0.93,-141.35)  489.08                80
 09/18/2019   10:33:55   (  -0.03,-137.03) (  -0.09,-136.82)   25.34                80