Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 11 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)
 11/02/2018   10:30:57   (   0.15,-132.19) (   1.10,-136.57)  499.32                80
 11/03/2018   10:12:08   (   0.16,-131.37) (   0.32,-131.99)   71.61                80
 11/04/2018   09:56:01   (   0.17,-130.55) (  -0.51,-127.42)  355.88                80
 11/05/2018   22:15:14   (  -0.13,-129.42) (  -0.87,-132.69)  372.24                80
 11/06/2018   21:59:07   (  -0.15,-128.59) (  -0.03,-128.12)   54.22                80
 11/07/2018   21:40:19   (  -0.16,-127.76) (   0.81,-123.55)  480.65                80
 11/09/2018   09:59:21   (   0.13,-126.36) (   0.69,-128.75)  273.92                80
 11/10/2018   09:43:14   (   0.14,-125.53) (  -0.15,-124.19)  152.91                80
 11/12/2018   21:43:40   (  -0.12,-123.58) (  -0.39,-124.88)  147.78                80
 11/13/2018   21:27:31   (  -0.12,-122.75) (   0.40,-120.30)  277.97                80
 11/15/2018   09:46:35   (   0.09,-121.31) (   1.05,-125.52)  479.94                80