Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 2 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/13/2019   10:01:52   (  -0.04,-128.13) (   0.10,-128.90)   87.56                80
 02/14/2019   09:40:27   (  -0.04,-128.15) (  -0.89,-124.36)  431.56                80
 02/15/2019   22:05:02   (   0.03,-128.11) (  -0.31,-129.66)  177.43                80
 02/16/2019   21:46:16   (   0.03,-128.12) (   0.68,-125.13)  341.26                80
 02/18/2019   10:08:04   (  -0.02,-128.23) (   0.49,-130.39)  247.53                80
 02/19/2019   09:46:39   (  -0.01,-128.24) (  -0.56,-125.87)  270.98                80
 02/20/2019   22:11:15   (   0.01,-128.19) (  -0.63,-131.17)  338.78                80
 02/21/2019   21:49:49   (   0.01,-128.21) (   0.36,-126.63)  179.43                80
 02/23/2019   10:14:16   (  -0.01,-128.31) (   0.80,-131.90)  410.07                80
 02/24/2019   09:52:52   (  -0.01,-128.32) (  -0.25,-127.38)  108.07                80