Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 3 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/02/2018   10:24:03   (   0.02,-135.36) (  -0.04,-135.13)   26.86                80
 03/04/2018   22:29:55   (  -0.02,-135.32) (  -0.16,-135.90)   66.58                80
 03/05/2018   22:08:31   (  -0.02,-135.31) (   0.83,-131.37)  447.99                80
 03/07/2018   10:32:59   (   0.03,-135.29) (   0.35,-136.64)  154.20                80
 03/08/2018   10:11:36   (   0.02,-135.28) (  -0.70,-132.12)  359.96                80
 03/09/2018   22:36:12   (  -0.03,-135.23) (  -0.54,-137.42)  249.33                80
 03/10/2018   22:14:49   (  -0.03,-135.21) (   0.51,-132.90)  264.56                80
 03/12/2018   10:39:16   (   0.03,-135.19) (   0.73,-138.15)  338.57                80
 03/13/2018   10:17:52   (   0.03,-135.17) (  -0.32,-133.63)  174.90                80
 03/14/2018   22:42:29   (  -0.04,-135.11) (  -0.92,-138.93)  435.47                80