Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 6 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)
 06/14/2020   22:08:02   (  -0.02,-127.71) (  -0.75,-131.02)  376.08                80
 06/15/2020   21:51:57   (  -0.01,-127.68) (   0.23,-126.48)  136.80                80
 06/17/2020   10:13:44   (   0.03,-127.64) (   0.95,-131.74)  467.01                80
 06/18/2020   09:52:20   (   0.02,-127.60) (  -0.09,-127.21)   45.02                80
 06/20/2020   21:55:30   (  -0.02,-127.48) (  -0.14,-127.97)   55.96                80
 06/21/2020   21:39:25   (  -0.01,-127.44) (   0.91,-123.44)  455.87                80
 06/23/2020   10:01:12   (   0.02,-127.39) (   0.33,-128.69)  149.34                80
 06/24/2020   09:39:47   (   0.01,-127.34) (  -0.71,-124.17)  361.74                80
 06/25/2020   22:01:42   (  -0.02,-127.24) (  -0.50,-129.46)  252.78                80
 06/26/2020   21:45:37   (  -0.02,-127.19) (   0.49,-124.92)  258.58                80
 06/28/2020   10:07:24   (   0.03,-127.14) (   0.69,-130.19)  346.57                80