Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 1 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)
 01/17/2019   10:05:37   (  -0.06,-128.17) (   0.48,-130.43)  259.15                80
 01/18/2019   09:49:33   (  -0.05,-128.13) (  -0.57,-125.91)  253.84                80
 01/19/2019   22:08:48   (   0.06,-127.97) (  -0.64,-131.20)  367.85                80
 01/20/2019   21:52:42   (   0.05,-127.93) (   0.34,-126.67)  144.69                80
 01/22/2019   10:11:50   (  -0.06,-127.98) (   0.85,-131.93)  451.24                80
 01/23/2019   09:55:45   (  -0.05,-127.94) (  -0.20,-127.41)   61.08                80
 01/25/2019   21:56:15   (   0.06,-127.73) (  -0.02,-128.17)   49.15                80
 01/26/2019   21:40:10   (   0.05,-127.69) (   0.96,-123.63)  463.00                80
 01/28/2019   09:59:17   (  -0.06,-127.73) (   0.23,-128.90)  133.36                80
 01/29/2019   09:43:12   (  -0.05,-127.69) (  -0.82,-124.37)  378.65                80