Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 12 19.  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)
 12/19/2021   06:44:39   (   0.04,-137.20) (  -0.18,-138.10)  103.26                80
 12/20/2021   06:21:19   (   0.04,-137.20) (   0.95,-133.11)  465.61                80
 12/21/2021   18:40:11   (  -0.03,-137.20) (   0.07,-137.67)   53.31                80
 12/24/2021   06:41:10   (   0.03,-137.18) (   0.01,-137.27)   10.42                80
 12/26/2021   18:39:21   (  -0.02,-137.16) (  -0.07,-136.82)   38.08                80
 12/28/2021   06:58:22   (   0.02,-137.14) (  -0.92,-141.43)  488.48                80
 12/29/2021   06:35:01   (   0.02,-137.12) (   0.15,-136.42)   79.13                80
 12/30/2021   18:53:52   (  -0.02,-137.10) (   0.85,-140.99)  442.36                80
 12/31/2021   18:35:53   (  -0.02,-137.08) (  -0.29,-135.99)  124.79                80