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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/17/2019   10:01:33   (   0.03,-128.37) (   0.15,-128.82)   52.80                80
 03/18/2019   09:40:09   (   0.03,-128.36) (  -0.91,-124.30)  462.85                80
 03/19/2019   22:04:44   (  -0.03,-128.29) (  -0.29,-129.60)  147.98                80
 03/20/2019   21:43:19   (  -0.03,-128.28) (   0.71,-125.06)  367.44                80
 03/22/2019   10:06:26   (   0.03,-128.31) (   0.49,-130.32)  229.41                 1
 03/23/2019   09:46:19   (   0.03,-128.30) (  -0.52,-125.79)  285.90                80
 03/24/2019   22:10:55   (  -0.03,-128.23) (  -0.68,-131.08)  325.32                80
 03/25/2019   21:49:29   (  -0.03,-128.22) (   0.32,-126.55)  189.63                80
 03/27/2019   10:11:17   (   0.03,-128.24) (   0.81,-131.82)  408.17                80
 03/28/2019   09:55:11   (   0.03,-128.22) (  -0.19,-127.29)  106.67                80