Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2019 1 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/14/2019   20:21:09   (   0.03,-104.08) (  -0.03,-104.38)   34.89                80
 01/15/2019   20:05:04   (   0.02,-104.08) (   0.95, -99.85)  482.22                80
 01/17/2019   08:26:52   (  -0.02,-104.32) (   0.18,-105.13)   92.00                80
 01/18/2019   08:05:28   (  -0.02,-104.32) (  -0.86,-100.60)  424.51                80
 01/19/2019   20:27:22   (   0.02,-104.08) (  -0.40,-105.88)  206.28                80
 01/20/2019   20:11:18   (   0.01,-104.08) (   0.64,-101.36)  310.40                80
 01/22/2019   08:33:06   (  -0.01,-104.32) (   0.49,-106.64)  263.68                80
 01/23/2019   08:11:41   (  -0.01,-104.32) (  -0.50,-102.10)  252.76                80
 01/24/2019   20:33:36   (   0.01,-104.08) (  -0.70,-107.40)  378.33                80
 01/25/2019   20:17:30   (   0.01,-104.08) (   0.28,-102.86)  138.43                80
 01/27/2019   08:36:39   (  -0.02,-104.33) (   0.84,-108.14)  434.86                80