Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 8 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)
 08/15/2020   10:05:18   (  -0.03,-128.07) (   0.47,-130.31)  254.96                80
 08/16/2020   09:49:14   (  -0.03,-128.04) (  -0.52,-125.78)  257.52                80
 08/17/2020   22:08:31   (   0.03,-127.94) (  -0.66,-131.08)  357.46                80
 08/18/2020   21:52:27   (   0.03,-127.91) (   0.34,-126.55)  154.86                80
 08/20/2020   10:11:35   (  -0.04,-127.89) (   0.84,-131.82)  448.02                80
 08/21/2020   09:55:30   (  -0.04,-127.85) (  -0.16,-127.28)   64.05                80
 08/23/2020   21:56:03   (   0.04,-127.71) (  -0.02,-128.06)   39.85                80
 08/24/2020   21:39:59   (   0.03,-127.66) (   0.97,-123.52)  471.90                80
 08/26/2020   09:59:07   (  -0.04,-127.63) (   0.21,-128.79)  132.11                80
 08/27/2020   09:43:03   (  -0.04,-127.59) (  -0.79,-124.26)  379.11                80