Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 12 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)
 12/19/2021   06:44:39   (   0.03,-137.20) (  -0.17,-138.10)  103.35                80
 12/20/2021   06:21:19   (   0.03,-137.19) (   0.96,-133.11)  465.26                80
 12/21/2021   18:40:11   (  -0.03,-137.19) (   0.06,-137.67)   54.32                80
 12/24/2021   06:41:11   (   0.02,-137.16) (   0.02,-137.27)   12.11                80
 12/26/2021   18:39:21   (  -0.02,-137.14) (  -0.08,-136.83)   35.57                80
 12/28/2021   06:58:21   (   0.02,-137.11) (  -0.97,-141.41)  491.20                80
 12/29/2021   06:35:01   (   0.02,-137.09) (   0.16,-136.42)   76.15                80
 12/30/2021   18:53:53   (  -0.01,-137.07) (   0.85,-140.99)  445.84                80
 12/31/2021   18:35:52   (  -0.01,-137.05) (  -0.23,-135.98)  121.11                80