Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 4 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/16/2019   21:39:30   (  -0.07,-127.58) (   0.88,-123.47)  469.96                80
 04/18/2019   09:58:39   (   0.06,-127.54) (   0.32,-128.73)  136.33                80
 04/19/2019   09:42:34   (   0.07,-127.50) (  -0.66,-124.20)  375.55                80
 04/20/2019   22:01:51   (  -0.06,-127.42) (  -0.54,-129.50)  237.32                80
 04/21/2019   21:45:48   (  -0.06,-127.38) (   0.50,-124.98)  274.27                80
 04/23/2019   10:04:56   (   0.06,-127.32) (   0.70,-130.25)  332.98                80
 04/24/2019   09:48:52   (   0.06,-127.28) (  -0.28,-125.71)  178.40                80
 04/25/2019   22:08:09   (  -0.06,-127.20) (  -0.92,-131.02)  435.16                80
 04/26/2019   21:52:05   (  -0.06,-127.15) (   0.07,-126.48)   76.03                80
 04/29/2019   09:52:29   (   0.07,-127.04) (   0.10,-127.23)   20.93                80
 04/30/2019   09:36:25   (   0.07,-126.99) (  -0.89,-122.69)  490.09                80