Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2019 6 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/21/2019   08:20:31   (  -0.06,-104.51) (  -0.25,-103.58)  105.32                80
 06/22/2019   20:39:50   (   0.09,-104.68) (  -0.85,-108.91)  481.95                80
 06/23/2019   20:23:45   (   0.07,-104.68) (   0.15,-104.37)   35.33                80
 06/26/2019   08:24:09   (  -0.08,-104.54) (   0.03,-105.11)   64.72                80
 06/27/2019   08:08:04   (  -0.07,-104.55) (  -0.98,-100.58)  452.76                80
 06/28/2019   20:27:22   (   0.10,-104.71) (  -0.18,-105.89)  134.39                80
 06/29/2019   20:11:17   (   0.09,-104.72) (   0.82,-101.36)  382.71                80
 07/01/2019   08:30:26   (  -0.13,-104.56) (   0.35,-106.63)  235.57                80
 07/02/2019   08:14:21   (  -0.11,-104.57) (  -0.65,-102.09)  281.42                80
 07/03/2019   20:33:39   (   0.15,-104.73) (  -0.44,-107.42)  306.12                80
 07/04/2019   20:17:35   (   0.13,-104.73) (   0.56,-102.89)  210.74                80