Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 7 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)
 07/18/2021   08:08:07   (  -0.20,-104.11) (  -1.01,-100.61)  399.18                80
 07/19/2021   20:27:25   (   0.24,-104.35) (  -0.12,-105.93)  180.28                80
 07/20/2021   20:11:20   (   0.22,-104.35) (   0.86,-101.39)  336.56                80
 07/22/2021   08:30:30   (  -0.26,-104.12) (   0.29,-106.67)  290.63                80
 07/23/2021   08:14:25   (  -0.25,-104.11) (  -0.69,-102.13)  225.66                80
 07/24/2021   20:33:44   (   0.28,-104.35) (  -0.44,-107.45)  354.96                80
 07/25/2021   20:17:40   (   0.27,-104.35) (   0.60,-102.93)  162.31                80
 07/27/2021   08:39:28   (  -0.30,-104.14) (   0.60,-108.20)  462.65                80
 07/28/2021   08:19:40   (  -0.28,-104.14) (  -0.38,-103.66)   54.19                16
 07/30/2021   20:21:19   (   0.30,-104.37) (   0.30,-104.46)    9.33                80