Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 10 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/30/2018   22:28:02   (  -0.17,-135.17) (  -0.38,-135.95)   89.70                80
 10/31/2018   22:11:58   (  -0.19,-135.14) (   0.66,-131.43)  423.28                80
 11/02/2018   10:31:05   (   0.16,-135.13) (   0.52,-136.70)  178.50                80
 11/03/2018   10:14:59   (   0.17,-135.09) (  -0.46,-132.16)  333.79                80
 11/04/2018   22:34:16   (  -0.14,-134.97) (  -0.70,-137.47)  284.37                80
 11/05/2018   22:18:10   (  -0.15,-134.94) (   0.28,-132.93)  228.30                80
 11/07/2018   10:37:18   (   0.13,-134.94) (   0.84,-138.21)  372.87                80
 11/08/2018   10:21:13   (   0.14,-134.89) (  -0.14,-133.68)  139.00                80
 11/09/2018   22:40:28   (  -0.11,-134.76) (  -1.08,-138.97)  481.11                80
 11/10/2018   22:24:24   (  -0.13,-134.71) (  -0.04,-134.45)   30.97                80