Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 3 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/04/2019   21:43:29   (   0.00,-128.35) (   0.72,-125.10)  369.90                80
 03/06/2019   10:05:16   (   0.00,-128.40) (   0.43,-130.37)  224.44                80
 03/07/2019   09:46:30   (  -0.00,-128.41) (  -0.56,-125.84)  292.47                80
 03/08/2019   22:11:06   (   0.00,-128.36) (  -0.64,-131.14)  316.62                80
 03/09/2019   21:49:41   (   0.00,-128.36) (   0.42,-126.61)  199.95                80
 03/11/2019   10:11:28   (  -0.00,-128.40) (   0.79,-131.87)  395.43                80
 03/12/2019   09:55:22   (  -0.00,-128.40) (  -0.21,-127.33)  120.81                80
 03/13/2019   22:17:17   (  -0.00,-128.34) (  -0.99,-132.63)  489.47                80
 03/14/2019   21:55:53   (  -0.00,-128.33) (   0.07,-128.11)   26.21                80
 03/17/2019   09:58:54   (  -0.00,-128.35) (   0.13,-128.83)   55.79                80