Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 9 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/19/2021   08:27:16   (   0.36,-104.19) (   0.55,-105.08)  100.90                80
 09/20/2021   08:05:51   (   0.36,-104.18) (  -0.46,-100.55)  414.34                80
 09/21/2021   20:27:49   (  -0.35,-104.25) (  -0.71,-105.86)  183.47                80
 09/22/2021   20:11:44   (  -0.36,-104.26) (   0.29,-101.32)  334.39                80
 09/24/2021   08:33:32   (   0.34,-104.23) (   0.88,-106.59)  270.03                80
 09/25/2021   08:12:08   (   0.35,-104.22) (  -0.12,-102.06)  245.37                80
 09/26/2021   20:34:05   (  -0.33,-104.24) (  -1.04,-107.37)  356.76                80
 09/27/2021   20:18:01   (  -0.34,-104.25) (  -0.03,-102.84)  160.90                80
 09/29/2021   08:39:49   (   0.32,-104.25) (   1.21,-108.11)  439.89                80
 09/30/2021   08:18:25   (   0.33,-104.24) (   0.20,-103.57)   75.31                80