Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 12 8.  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)
 12/09/2021   06:51:35   (   0.03,-137.21) (  -0.54,-139.77)  292.20                80
 12/10/2021   06:28:16   (   0.03,-137.21) (   0.58,-134.78)  277.17                80
 12/11/2021   18:49:47   (  -0.02,-137.21) (   0.46,-139.33)  242.38                80
 12/12/2021   18:26:27   (  -0.03,-137.21) (  -0.67,-134.34)  326.94                80
 12/14/2021   06:48:07   (   0.02,-137.21) (  -0.38,-138.93)  196.41                80
 12/15/2021   06:24:47   (   0.02,-137.21) (   0.74,-133.94)  372.52                80
 12/16/2021   18:43:38   (  -0.02,-137.20) (   0.28,-138.50)  148.05                80
 12/17/2021   18:25:39   (  -0.02,-137.20) (  -0.84,-133.51)  420.55                80
 12/19/2021   06:44:38   (   0.01,-137.18) (  -0.20,-138.09)  104.08                80
 12/20/2021   06:21:19   (   0.01,-137.17) (   0.92,-133.10)  464.03                80
 12/21/2021   18:40:10   (  -0.00,-137.15) (   0.10,-137.66)   57.92                80