Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 10 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/09/2018   22:24:31   (  -0.28,-135.61) (  -0.04,-134.41)  136.20                80
 10/11/2018   10:43:40   (   0.26,-135.64) (   1.18,-139.69)  461.70                80
 10/12/2018   10:27:35   (   0.27,-135.64) (   0.15,-135.17)   53.77                80
 10/14/2018   22:28:06   (  -0.26,-135.57) (  -0.35,-135.94)   42.47                80
 10/15/2018   22:12:01   (  -0.27,-135.56) (   0.68,-131.41)  472.98                80
 10/17/2018   10:31:09   (   0.24,-135.58) (   0.51,-136.68)  125.88                80
 10/18/2018   10:15:04   (   0.25,-135.57) (  -0.52,-132.16)  388.79                80
 10/19/2018   22:34:21   (  -0.22,-135.49) (  -0.65,-137.47)  224.77                80
 10/20/2018   22:18:15   (  -0.23,-135.48) (   0.33,-132.93)  290.15                80
 10/22/2018   10:37:23   (   0.21,-135.50) (   0.81,-138.21)  308.45                80
 10/23/2018   10:21:18   (   0.22,-135.48) (  -0.17,-133.67)  205.71                80