Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 7 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/04/2020   09:52:25   (   0.02,-128.23) (  -0.17,-127.23)  112.56                80
 07/05/2020   22:14:23   (  -0.02,-128.20) (  -1.01,-132.54)  495.20                80
 07/06/2020   21:58:19   (  -0.02,-128.22) (   0.03,-128.02)   23.04                80
 07/09/2020   10:01:24   (   0.02,-128.32) (   0.13,-128.76)   50.01                80
 07/10/2020   09:40:01   (   0.02,-128.34) (  -0.92,-124.24)  467.91                80
 07/11/2020   22:01:57   (  -0.03,-128.31) (  -0.33,-129.53)  140.27                80
 07/12/2020   21:45:53   (  -0.02,-128.32) (   0.72,-125.01)  377.77                80
 07/14/2020   10:07:43   (   0.02,-128.41) (   0.42,-130.29)  213.81                80
 07/15/2020   09:46:18   (   0.02,-128.42) (  -0.56,-125.75)  303.53                80
 07/16/2020   22:08:15   (  -0.01,-128.37) (  -0.62,-131.06)  306.34                80
 07/17/2020   21:52:12   (  -0.01,-128.38) (   0.43,-126.54)  210.73                80