Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 1 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)
 01/17/2019   10:05:38   (  -0.06,-128.17) (   0.43,-130.44)  259.15                80
 01/18/2019   09:49:32   (  -0.05,-128.13) (  -0.55,-125.91)  253.78                80
 01/19/2019   22:08:48   (   0.06,-127.97) (  -0.66,-131.20)  368.01                80
 01/20/2019   21:52:42   (   0.05,-127.93) (   0.33,-126.66)  144.46                80
 01/22/2019   10:11:50   (  -0.06,-127.98) (   0.86,-131.93)  451.53                80
 01/23/2019   09:55:45   (  -0.05,-127.94) (  -0.18,-127.41)   60.71                80
 01/25/2019   21:56:15   (   0.06,-127.73) (  -0.04,-128.17)   49.61                80
 01/26/2019   21:40:09   (   0.05,-127.69) (   0.95,-123.63)  462.46                80
 01/28/2019   09:59:18   (  -0.06,-127.73) (   0.18,-128.91)  133.97                80
 01/29/2019   09:43:12   (  -0.05,-127.68) (  -0.80,-124.37)  377.98                80