Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 7 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/10/2019   21:46:28   (   0.14,-127.63) (   0.71,-125.12)  286.13                80
 07/12/2019   10:05:36   (  -0.16,-127.75) (   0.45,-130.39)  301.67                80
 07/13/2019   09:49:33   (  -0.15,-127.82) (  -0.62,-125.88)  221.81                80
 07/14/2019   22:08:50   (   0.18,-127.89) (  -0.54,-131.19)  375.67                80
 07/15/2019   21:52:45   (   0.17,-127.95) (   0.47,-126.65)  147.76                80
 07/17/2019   10:11:54   (  -0.20,-128.07) (   0.70,-131.93)  440.36                80
 07/18/2019   09:55:50   (  -0.19,-128.13) (  -0.37,-127.41)   82.78                80
 07/20/2019   21:59:03   (   0.20,-128.25) (   0.23,-128.19)    7.74                80
 07/23/2019   09:59:27   (  -0.21,-128.43) (  -0.08,-128.93)   57.76                80