Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 7 9.  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)
 07/09/2021   18:53:52   (   0.02,-137.18) (   0.91,-141.02)  438.11                80
 07/10/2021   18:35:54   (   0.02,-137.18) (  -0.24,-136.03)  130.80                80
 07/12/2021   06:52:14   (  -0.02,-137.17) (  -0.80,-140.62)  393.36                80
 07/13/2021   06:34:16   (  -0.01,-137.17) (   0.35,-135.63)  175.16                80
 07/14/2021   18:50:28   (   0.01,-137.15) (   0.68,-140.19)  346.23                80
 07/15/2021   18:32:29   (   0.01,-137.15) (  -0.41,-135.19)  222.03                80
 07/17/2021   06:48:49   (  -0.00,-137.13) (  -0.62,-139.79)  303.00                80
 07/18/2021   06:30:50   (  -0.01,-137.12) (   0.53,-134.80)  264.91                80
 07/19/2021   18:47:03   (   0.01,-137.09) (   0.50,-139.36)  257.63                80
 07/20/2021   18:29:03   (   0.02,-137.08) (  -0.59,-134.36)  309.73                80
 07/22/2021   06:45:23   (  -0.02,-137.05) (  -0.43,-138.95)  216.82                80