Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 12 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/15/2021   20:34:35   (  -0.02,-104.19) (  -0.76,-107.46)  373.12                80
 12/16/2021   20:18:29   (  -0.03,-104.19) (   0.27,-102.93)  144.71                80
 12/18/2021   08:40:16   (   0.01,-104.52) (   0.82,-108.21)  420.41                80
 12/19/2021   08:18:50   (   0.02,-104.51) (  -0.15,-103.67)   96.29                80
 12/21/2021   20:21:58   (  -0.02,-104.19) (  -0.08,-104.42)   25.85                80
 12/22/2021   20:05:52   (  -0.02,-104.20) (   0.96, -99.89)  491.74                80
 12/24/2021   08:27:40   (   0.01,-104.53) (   0.13,-105.17)   72.79                80
 12/25/2021   08:06:13   (   0.01,-104.53) (  -0.84,-100.63)  443.97                80
 12/26/2021   20:28:07   (   0.00,-104.20) (  -0.36,-105.92)  196.18                80
 12/27/2021   20:12:01   (  -0.00,-104.20) (   0.62,-101.38)  321.41                80