Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 12 3.  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)
 12/04/2021   06:55:03   (   0.04,-137.20) (  -0.70,-140.61)  388.21                80
 12/05/2021   06:31:43   (   0.04,-137.19) (   0.36,-135.60)  180.34                80
 12/06/2021   18:50:35   (  -0.03,-137.18) (   0.62,-140.17)  340.29                80
 12/07/2021   18:32:36   (  -0.03,-137.17) (  -0.50,-135.18)  228.02                80
 12/09/2021   06:51:35   (   0.02,-137.16) (  -0.54,-139.77)  297.35                80
 12/10/2021   06:28:16   (   0.02,-137.15) (   0.58,-134.78)  270.84                80
 12/11/2021   18:47:07   (  -0.02,-137.14) (   0.46,-139.33)  250.17                80
 12/12/2021   18:29:07   (  -0.02,-137.13) (  -0.67,-134.34)  317.95                80
 12/14/2021   06:48:07   (   0.02,-137.10) (  -0.38,-138.93)  207.81                80
 12/15/2021   06:24:46   (   0.01,-137.09) (   0.69,-133.93)  359.97                80
 12/16/2021   18:43:38   (  -0.01,-137.07) (   0.28,-138.50)  162.01                80