Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 4 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)
 04/16/2019   21:39:30   (  -0.07,-127.58) (   0.87,-123.47)  469.87                80
 04/18/2019   09:58:38   (   0.06,-127.54) (   0.33,-128.73)  136.21                80
 04/19/2019   09:42:34   (   0.06,-127.50) (  -0.65,-124.20)  375.67                80
 04/20/2019   22:01:51   (  -0.06,-127.42) (  -0.55,-129.50)  237.39                80
 04/21/2019   21:45:48   (  -0.06,-127.38) (   0.50,-124.98)  274.20                80
 04/23/2019   10:04:56   (   0.06,-127.33) (   0.71,-130.25)  332.86                80
 04/24/2019   09:48:52   (   0.06,-127.28) (  -0.28,-125.71)  178.52                80
 04/25/2019   22:08:09   (  -0.06,-127.20) (  -0.92,-131.02)  435.19                80
 04/26/2019   21:52:04   (  -0.06,-127.15) (   0.07,-126.48)   76.00                80
 04/29/2019   09:52:29   (   0.07,-127.04) (   0.09,-127.23)   20.79                80