Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 9 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)
 09/30/2019   10:05:34   (   0.29,-127.62) (   0.89,-130.24)  299.35                80
 10/01/2019   09:49:30   (   0.30,-127.58) (  -0.14,-125.72)  212.73                80
 10/02/2019   22:08:45   (  -0.28,-127.48) (  -1.08,-131.01)  402.56                80
 10/03/2019   21:52:41   (  -0.29,-127.44) (  -0.05,-126.49)  109.54                80
 10/05/2019   10:11:48   (   0.27,-127.41) (   1.25,-131.76)  495.27                80
 10/06/2019   09:55:44   (   0.27,-127.37) (   0.22,-127.23)   16.48                80
 10/08/2019   21:56:13   (  -0.26,-127.22) (  -0.46,-127.99)   88.91                80
 10/09/2019   21:40:09   (  -0.27,-127.17) (   0.58,-123.47)  422.81                80
 10/11/2019   09:59:16   (   0.25,-127.14) (   0.62,-128.74)  182.24                80
 10/12/2019   09:43:12   (   0.25,-127.09) (  -0.41,-124.21)  329.03                80