Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 12 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 12/15/2021   06:24:48   (   0.03,-137.20) (   0.77,-133.95)  371.50                80
 12/16/2021   18:43:39   (  -0.03,-137.20) (   0.26,-138.50)  148.06                80
 12/17/2021   18:25:39   (  -0.03,-137.20) (  -0.87,-133.51)  420.35                80
 12/19/2021   06:44:39   (   0.03,-137.17) (  -0.18,-138.10)  105.69                80
 12/20/2021   06:21:19   (   0.03,-137.16) (   0.94,-133.11)  462.19                80
 12/21/2021   18:40:11   (  -0.02,-137.15) (   0.08,-137.67)   58.80                80
 12/24/2021   06:41:10   (   0.02,-137.10) (  -0.00,-137.27)   18.32                80
 12/26/2021   18:39:21   (  -0.01,-137.06) (  -0.05,-136.82)   27.10                80