Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 9 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/11/2021   20:17:55   (  -0.39,-104.29) (  -0.03,-102.84)  166.50                80
 09/13/2021   08:39:43   (   0.38,-104.20) (   1.27,-108.09)  444.04                80
 09/14/2021   08:18:18   (   0.38,-104.18) (   0.27,-103.56)   70.77                80
 09/16/2021   20:21:32   (  -0.37,-104.27) (  -0.38,-104.35)    9.11                80
 09/19/2021   08:27:16   (   0.36,-104.20) (   0.55,-105.08)  100.19                80
 09/20/2021   08:05:51   (   0.36,-104.19) (  -0.45,-100.55)  415.22                80
 09/21/2021   20:27:49   (  -0.35,-104.26) (  -0.71,-105.86)  182.60                80
 09/22/2021   20:11:44   (  -0.36,-104.27) (   0.30,-101.33)  335.40                80
 09/24/2021   08:33:32   (   0.34,-104.24) (   0.88,-106.60)  268.62                80