Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 11 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/09/2018   09:59:22   (   0.13,-126.34) (   0.68,-128.75)  275.32                80
 11/10/2018   09:43:14   (   0.13,-125.51) (  -0.17,-124.19)  151.23                80
 11/12/2018   21:43:39   (  -0.11,-123.56) (  -0.43,-124.87)  149.94                80
 11/13/2018   21:27:32   (  -0.12,-122.72) (   0.41,-120.30)  275.52                80
 11/15/2018   09:46:35   (   0.09,-121.28) (   1.03,-125.52)  483.07                80
 11/16/2018   09:27:47   (   0.10,-120.45) (   0.19,-120.95)   56.77                80
 11/17/2018   09:11:39   (   0.11,-119.61) (  -0.60,-116.37)  369.29                80
 11/18/2018   21:30:52   (  -0.07,-118.51) (  -0.78,-121.63)  356.56                80
 11/19/2018   21:14:45   (  -0.08,-117.67) (   0.06,-117.07)   68.63                80
 11/20/2018   20:55:56   (  -0.10,-116.83) (   0.85,-112.49)  493.82                80