Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 8 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/13/2020   21:46:10   (   0.02,-128.09) (   0.71,-125.04)  347.09                80
 08/15/2020   10:05:18   (  -0.03,-128.07) (   0.47,-130.31)  255.02                80
 08/16/2020   09:49:14   (  -0.03,-128.04) (  -0.53,-125.78)  257.41                80
 08/17/2020   22:08:31   (   0.03,-127.94) (  -0.65,-131.08)  357.78                80
 08/18/2020   21:52:27   (   0.03,-127.90) (   0.34,-126.55)  154.49                80
 08/20/2020   10:11:35   (  -0.04,-127.88) (   0.83,-131.82)  448.33                80
 08/21/2020   09:55:31   (  -0.03,-127.84) (  -0.17,-127.29)   63.69                80
 08/23/2020   21:56:02   (   0.03,-127.70) (  -0.07,-128.05)   40.53                80
 08/24/2020   21:39:58   (   0.03,-127.66) (   0.93,-123.51)  471.24                80
 08/26/2020   09:59:06   (  -0.04,-127.63) (   0.25,-128.78)  132.74                80