Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 12 11.  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)
 12/11/2021   18:49:48   (  -0.03,-137.21) (   0.41,-139.34)  242.70                80
 12/12/2021   18:26:27   (  -0.04,-137.21) (  -0.65,-134.34)  326.54                80
 12/14/2021   06:48:07   (   0.03,-137.21) (  -0.34,-138.94)  197.37                80
 12/15/2021   06:24:48   (   0.04,-137.20) (   0.78,-133.95)  371.46                80
 12/16/2021   18:46:19   (  -0.03,-137.20) (   0.24,-138.51)  148.71                80
 12/17/2021   18:23:00   (  -0.03,-137.19) (  -0.88,-133.51)  419.76                80
 12/19/2021   06:44:39   (   0.03,-137.17) (  -0.17,-138.10)  105.54                80
 12/20/2021   06:21:20   (   0.02,-137.16) (   0.96,-133.11)  462.45                80
 12/21/2021   18:40:10   (  -0.02,-137.15) (   0.12,-137.66)   59.15                80
 12/24/2021   06:38:30   (   0.01,-137.10) (  -0.05,-137.25)   18.01                80