Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 5 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/30/2019   10:11:36   (   0.01,-128.44) (   0.79,-131.88)  391.76                80
 05/31/2019   09:55:31   (   0.02,-128.44) (  -0.20,-127.34)  124.26                80
 06/01/2019   22:14:49   (  -0.00,-128.44) (  -0.96,-132.65)  480.96                80
 06/02/2019   21:58:44   (  -0.01,-128.43) (   0.03,-128.12)   34.95                80
 06/05/2019   09:59:09   (  -0.00,-128.40) (   0.11,-128.87)   53.48                80
 06/06/2019   09:43:05   (   0.01,-128.39) (  -0.89,-124.33)  461.39                80
 06/07/2019   22:02:22   (   0.01,-128.37) (  -0.27,-129.65)  145.63                80
 06/08/2019   21:46:17   (  -0.00,-128.35) (   0.73,-125.11)  369.33                80
 06/10/2019   10:05:26   (  -0.02,-128.32) (   0.47,-130.38)  234.84                80
 06/11/2019   09:49:21   (  -0.01,-128.31) (  -0.53,-125.85)  279.74                80