Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 9 18.  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)
 09/18/2021   06:48:11   (   0.04,-137.20) (  -0.32,-138.93)  197.36                80
 09/19/2021   06:24:51   (   0.04,-137.19) (   0.79,-133.94)  371.57                80
 09/20/2021   18:43:42   (  -0.04,-137.19) (   0.28,-138.48)  148.23                80
 09/21/2021   18:25:42   (  -0.04,-137.19) (  -0.83,-133.49)  420.66                80
 09/23/2021   06:44:44   (   0.04,-137.18) (  -0.16,-138.09)  104.12                80
 09/24/2021   06:21:24   (   0.03,-137.17) (   0.95,-133.10)  464.33                80
 09/25/2021   18:40:15   (  -0.03,-137.16) (   0.06,-137.66)   56.51                80
 09/28/2021   06:41:16   (   0.03,-137.12) (   0.01,-137.25)   14.48                80
 09/30/2021   18:39:27   (  -0.02,-137.08) (  -0.06,-136.80)   30.96                80