Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 3 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/06/2019   10:05:16   (   0.00,-128.40) (   0.42,-130.38)  224.46                80
 03/07/2019   09:46:31   (  -0.00,-128.41) (  -0.57,-125.84)  292.44                80
 03/08/2019   22:11:06   (   0.00,-128.36) (  -0.63,-131.14)  316.66                80
 03/09/2019   21:49:40   (   0.00,-128.36) (   0.37,-126.60)  199.89                80
 03/11/2019   10:11:28   (  -0.00,-128.40) (   0.78,-131.87)  395.48                80
 03/12/2019   09:55:22   (  -0.00,-128.40) (  -0.22,-127.34)  120.73                80
 03/13/2019   22:17:18   (  -0.00,-128.34) (  -0.98,-132.63)  489.55                80
 03/14/2019   21:55:53   (  -0.00,-128.33) (   0.08,-128.11)   26.19                80
 03/17/2019   09:58:54   (   0.00,-128.35) (   0.13,-128.83)   55.83                80
 03/18/2019   09:42:49   (  -0.00,-128.33) (  -0.93,-124.31)  459.42                80