Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2018 12 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/29/2018   20:21:13   (   0.02,-104.05) (  -0.08,-104.38)   38.15                80
 12/30/2018   20:05:09   (   0.01,-104.06) (   0.95, -99.85)  479.49                80
 01/01/2019   08:26:57   (  -0.02,-104.29) (   0.17,-105.13)   96.18                80
 01/02/2019   08:05:32   (  -0.01,-104.29) (  -0.86,-100.61)  420.55                80
 01/03/2019   20:27:28   (   0.02,-104.07) (  -0.36,-105.90)  208.19                80
 01/04/2019   20:11:22   (   0.01,-104.08) (   0.62,-101.36)  309.32                80
 01/06/2019   08:33:10   (  -0.02,-104.32) (   0.51,-106.64)  264.96                80
 01/07/2019   08:11:46   (  -0.01,-104.32) (  -0.52,-102.12)  251.89                80
 01/08/2019   20:33:40   (   0.02,-104.09) (  -0.75,-107.40)  377.83                80
 01/09/2019   20:17:36   (   0.02,-104.10) (   0.29,-102.88)  139.69                80