Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 7 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/21/2019   21:40:17   (   0.19,-127.99) (   1.15,-123.63)  495.64                80
 07/23/2019   09:59:26   (  -0.21,-128.06) (   0.00,-128.91)   97.68                80
 07/24/2019   09:43:21   (  -0.20,-128.08) (  -1.01,-124.38)  421.86                80
 07/25/2019   22:02:38   (   0.23,-128.09) (  -0.15,-129.69)  182.28                80
 07/26/2019   21:46:34   (   0.22,-128.12) (   0.86,-125.16)  336.99                80
 07/28/2019   10:05:43   (  -0.24,-128.18) (   0.24,-130.44)  257.22                80
 07/29/2019   09:49:39   (  -0.24,-128.20) (  -0.77,-125.91)  261.28                80
 07/30/2019   22:08:55   (   0.26,-128.19) (  -0.44,-131.21)  344.80                80
 07/31/2019   21:52:51   (   0.25,-128.20) (   0.57,-126.68)  173.55                80
 08/02/2019   10:12:00   (  -0.28,-128.26) (   0.53,-131.96)  421.39                80
 08/03/2019   09:55:55   (  -0.27,-128.27) (  -0.49,-127.43)   96.63                80