Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 12 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/05/2021   20:22:16   (  -0.05,-104.18) (  -0.11,-104.46)   32.55                80
 12/06/2021   20:06:10   (  -0.06,-104.18) (   0.92, -99.93)  485.23                80
 12/08/2021   08:27:58   (   0.04,-104.47) (   0.19,-105.21)   84.04                80
 12/09/2021   08:06:31   (   0.05,-104.47) (  -0.78,-100.67)  432.59                80
 12/10/2021   20:28:26   (  -0.03,-104.18) (  -0.42,-105.96)  203.19                80
 12/11/2021   20:12:20   (  -0.04,-104.19) (   0.61,-101.43)  315.05                80
 12/13/2021   08:34:07   (   0.02,-104.51) (   0.49,-106.72)  250.93                80
 12/14/2021   08:12:41   (   0.03,-104.51) (  -0.48,-102.17)  266.31                80
 12/15/2021   20:34:35   (  -0.01,-104.21) (  -0.72,-107.47)  371.10                80
 12/16/2021   20:18:29   (  -0.02,-104.22) (   0.25,-102.92)  147.14                80