Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 5 11.  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)
 05/11/2021   06:37:11   (  -0.05,-137.19) (   0.11,-136.44)   85.59                80
 05/12/2021   18:53:24   (   0.04,-137.19) (   0.87,-141.01)  434.27                80
 05/13/2021   18:35:26   (   0.04,-137.19) (  -0.24,-136.02)  133.84                80
 05/15/2021   06:51:47   (  -0.03,-137.16) (  -0.83,-140.60)  392.89                80
 05/16/2021   06:33:50   (  -0.03,-137.15) (   0.34,-135.63)  174.69                80
 05/17/2021   18:50:02   (   0.02,-137.14) (   0.69,-140.18)  346.71                80
 05/18/2021   18:32:03   (   0.02,-137.12) (  -0.42,-135.19)  220.51                80
 05/20/2021   06:48:26   (  -0.02,-137.09) (  -0.59,-139.79)  307.29                80
 05/21/2021   06:30:26   (  -0.02,-137.07) (   0.46,-134.79)  259.69                80
 05/22/2021   18:46:40   (   0.01,-137.05) (   0.51,-139.36)  262.61                80
 05/23/2021   18:28:41   (   0.01,-137.03) (  -0.61,-134.37)  304.00                80