Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 10 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/04/2018   22:18:17   (  -0.31,-135.63) (   0.33,-132.90)  311.69                80
 10/06/2018   10:40:06   (   0.28,-135.66) (   0.82,-138.18)  286.71                80
 10/07/2018   10:18:40   (   0.29,-135.65) (  -0.15,-133.64)  229.39                80
 10/08/2018   22:40:37   (  -0.27,-135.62) (  -1.02,-138.95)  379.84                80
 10/09/2018   22:24:32   (  -0.28,-135.62) (   0.01,-134.42)  136.71                80
 10/11/2018   10:43:39   (   0.26,-135.65) (   1.19,-139.69)  461.14                80
 10/12/2018   10:27:35   (   0.27,-135.64) (   0.16,-135.17)   54.48                80
 10/14/2018   22:28:06   (  -0.26,-135.58) (  -0.35,-135.94)   41.09                80
 10/15/2018   22:12:01   (  -0.27,-135.57) (   0.68,-131.41)  474.56                80
 10/17/2018   10:31:10   (   0.24,-135.60) (   0.46,-136.69)  124.24                80
 10/18/2018   10:15:04   (   0.25,-135.58) (  -0.51,-132.16)  390.60                80