Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 1 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/03/2019   22:08:54   (   0.05,-128.41) (  -0.55,-131.23)  320.61                80
 01/04/2019   21:52:49   (   0.04,-128.39) (   0.43,-126.69)  194.07                80
 01/06/2019   10:11:56   (  -0.05,-128.47) (   0.76,-131.96)  399.03                80
 01/07/2019   09:55:52   (  -0.04,-128.44) (  -0.28,-127.43)  115.26                80
 01/09/2019   21:57:44   (   0.05,-128.29) (   0.04,-128.19)   10.38                 3
 01/12/2019   09:59:24   (  -0.05,-128.33) (   0.11,-128.93)   69.89                80
 01/13/2019   09:43:20   (  -0.05,-128.30) (  -0.93,-124.41)  443.92                80
 01/14/2019   22:02:35   (   0.06,-128.16) (  -0.28,-129.71)  176.43                80
 01/15/2019   21:46:30   (   0.05,-128.13) (   0.70,-125.17)  337.01                80