Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 12 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/10/2021   20:28:25   (  -0.03,-104.17) (  -0.45,-105.96)  203.65                80
 12/11/2021   20:12:20   (  -0.04,-104.18) (   0.58,-101.43)  314.42                80
 12/13/2021   08:34:07   (   0.02,-104.50) (   0.52,-106.71)  251.85                80
 12/14/2021   08:12:41   (   0.03,-104.50) (  -0.51,-102.18)  265.20                80
 12/15/2021   20:34:35   (  -0.01,-104.19) (  -0.75,-107.46)  372.44                80
 12/16/2021   20:18:29   (  -0.02,-104.20) (   0.28,-102.93)  145.64                80
 12/18/2021   08:40:16   (   0.01,-104.53) (   0.81,-108.21)  418.82                80
 12/19/2021   08:18:50   (   0.02,-104.53) (  -0.16,-103.67)   98.16                80
 12/21/2021   20:21:58   (  -0.01,-104.21) (  -0.06,-104.42)   23.57                80
 12/22/2021   20:05:52   (  -0.02,-104.22) (   0.98, -99.89)  494.23                80