Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 7 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/30/2019   22:08:56   (   0.26,-128.22) (  -0.38,-131.22)  341.44                80
 07/31/2019   21:52:51   (   0.25,-128.24) (   0.57,-126.67)  177.31                80
 08/02/2019   10:12:00   (  -0.27,-128.29) (   0.52,-131.96)  418.28                80
 08/03/2019   09:55:54   (  -0.27,-128.30) (  -0.43,-127.42)  100.18                80
 08/05/2019   21:59:07   (   0.28,-128.32) (   0.29,-128.20)   13.67                80
 08/08/2019   09:59:31   (  -0.29,-128.38) (  -0.15,-128.94)   64.12                80
 08/09/2019   09:43:27   (  -0.28,-128.39) (  -1.17,-124.41)  453.68                80
 08/10/2019   22:02:44   (   0.30,-128.38) (   0.02,-129.72)  152.35                80
 08/11/2019   21:46:39   (   0.30,-128.39) (   1.03,-125.19)  365.32                80