Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 2 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/24/2019   09:52:51   (  -0.03,-128.33) (  -0.22,-127.37)  109.44                80
 02/25/2019   22:17:27   (   0.02,-128.30) (  -0.98,-132.67)  498.69                80
 02/26/2019   21:56:02   (   0.02,-128.31) (   0.07,-128.14)   19.42                80
 03/01/2019   10:01:44   (  -0.00,-128.40) (   0.09,-128.88)   54.37                80
 03/02/2019   09:40:19   (   0.00,-128.41) (  -0.91,-124.34)  463.43                80
 03/03/2019   22:04:54   (  -0.00,-128.36) (  -0.29,-129.64)  145.59                80
 03/04/2019   21:43:28   (  -0.00,-128.37) (   0.71,-125.10)  371.87                80
 03/06/2019   10:05:16   (   0.00,-128.44) (   0.44,-130.37)  220.76                80
 03/07/2019   09:46:30   (   0.00,-128.44) (  -0.56,-125.84)  296.57                80
 03/08/2019   22:11:06   (  -0.00,-128.39) (  -0.63,-131.14)  313.07                80
 03/09/2019   21:49:41   (  -0.00,-128.40) (   0.42,-126.61)  203.96                80