Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 7 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/25/2019   22:02:39   (   0.23,-128.10) (  -0.14,-129.69)  180.95                80
 07/26/2019   21:46:34   (   0.22,-128.13) (   0.87,-125.16)  338.47                80
 07/28/2019   10:05:42   (  -0.24,-128.19) (   0.28,-130.43)  256.39                80
 07/29/2019   09:49:38   (  -0.24,-128.21) (  -0.73,-125.90)  262.30                80
 07/30/2019   22:08:55   (   0.26,-128.21) (  -0.43,-131.21)  342.53                80
 07/31/2019   21:52:51   (   0.25,-128.23) (   0.59,-126.68)  175.96                80
 08/02/2019   10:11:59   (  -0.28,-128.27) (   0.56,-131.95)  419.62                80
 08/03/2019   09:55:55   (  -0.27,-128.29) (  -0.45,-127.42)   98.55                80
 08/05/2019   21:59:07   (   0.28,-128.30) (   0.31,-128.20)   11.17                80
 08/08/2019   09:59:31   (  -0.29,-128.36) (  -0.17,-128.95)   66.86                80