Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 3 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/14/2019   21:55:53   (  -0.03,-128.33) (   0.05,-128.10)   27.12                80
 03/17/2019   10:01:33   (   0.03,-128.37) (   0.14,-128.83)   52.79                80
 03/18/2019   09:40:08   (   0.03,-128.36) (  -0.86,-124.29)  463.07                80
 03/19/2019   22:04:43   (  -0.04,-128.30) (  -0.34,-129.59)  147.35                80
 03/20/2019   21:43:18   (  -0.03,-128.29) (   0.66,-125.05)  368.32                80
 03/22/2019   10:07:45   (   0.04,-128.32) (   0.47,-130.33)  228.10                80
 03/23/2019   09:46:20   (   0.03,-128.31) (  -0.53,-125.79)  287.47                80
 03/24/2019   22:10:55   (  -0.04,-128.25) (  -0.66,-131.09)  323.34                80
 03/25/2019   21:49:29   (  -0.03,-128.24) (   0.34,-126.55)  191.86                80
 03/27/2019   10:11:16   (   0.04,-128.26) (   0.85,-131.81)  405.48                80