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)
 07/05/2020   22:14:23   (  -0.03,-128.20) (  -1.00,-132.54)  495.21                80
 07/06/2020   21:55:39   (  -0.02,-128.22) (   0.05,-128.02)   23.10                80
 07/09/2020   10:01:24   (   0.02,-128.32) (   0.11,-128.76)   50.35                80
 07/10/2020   09:40:00   (   0.02,-128.34) (  -0.88,-124.23)  467.52                80
 07/11/2020   22:01:57   (  -0.03,-128.30) (  -0.31,-129.53)  140.60                80
 07/12/2020   21:45:54   (  -0.02,-128.32) (   0.74,-125.01)  377.36                80
 07/14/2020   10:07:42   (   0.02,-128.40) (   0.46,-130.28)  214.42                80
 07/15/2020   09:46:18   (   0.02,-128.41) (  -0.58,-125.76)  302.85                80
 07/16/2020   22:08:16   (  -0.02,-128.37) (  -0.60,-131.06)  307.00                80
 07/17/2020   21:52:11   (  -0.01,-128.38) (   0.39,-126.53)  210.02                80