Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 5 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)
 05/26/2019   09:49:14   (   0.04,-128.44) (  -0.52,-125.82)  297.38                80
 05/27/2019   22:08:31   (  -0.02,-128.45) (  -0.64,-131.13)  306.43                80
 05/28/2019   21:52:27   (  -0.03,-128.45) (   0.35,-126.60)  210.18                80
 05/30/2019   10:11:36   (   0.01,-128.44) (   0.78,-131.88)  392.06                80
 05/31/2019   09:55:32   (   0.02,-128.44) (  -0.21,-127.35)  123.87                80
 06/01/2019   22:14:49   (  -0.00,-128.43) (  -0.95,-132.66)  481.65                80
 06/02/2019   21:58:44   (  -0.01,-128.43) (   0.05,-128.12)   34.09                80
 06/05/2019   09:59:09   (  -0.00,-128.39) (   0.09,-128.87)   54.12                80
 06/06/2019   09:43:05   (   0.01,-128.38) (  -0.91,-124.34)  460.71                80
 06/07/2019   22:02:21   (   0.01,-128.36) (  -0.30,-129.64)  146.67                80