Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 12 20.  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)
 12/20/2021   06:21:19   (   0.04,-137.19) (   0.94,-133.11)  465.47                80
 12/21/2021   18:40:10   (  -0.03,-137.20) (   0.08,-137.67)   53.46                80
 12/24/2021   06:41:10   (   0.03,-137.17) (   0.00,-137.27)   10.83                80
 12/26/2021   18:39:21   (  -0.02,-137.16) (  -0.07,-136.82)   37.63                80
 12/28/2021   06:58:21   (   0.02,-137.13) (  -0.92,-141.43)  489.12                80
 12/29/2021   06:35:01   (   0.02,-137.11) (   0.16,-136.42)   78.41                80
 12/30/2021   18:53:52   (  -0.02,-137.10) (   0.84,-140.99)  443.06                80
 12/31/2021   18:35:52   (  -0.02,-137.08) (  -0.24,-135.98)  124.04                80
 01/02/2022   06:54:52   (   0.01,-137.03) (  -0.75,-140.59)  404.29                80