Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 8 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)
 08/20/2021   06:45:29   (   0.01,-137.17) (  -0.37,-138.95)  202.57                80
 08/21/2021   06:27:30   (   0.02,-137.16) (   0.73,-133.95)  365.49                80
 08/22/2021   18:43:42   (  -0.03,-137.15) (   0.26,-138.51)  155.09                80
 08/23/2021   18:25:43   (  -0.03,-137.14) (  -0.84,-133.52)  413.05                80
 08/25/2021   06:42:03   (   0.03,-137.12) (  -0.20,-138.11)  113.24                80
 08/26/2021   06:24:04   (   0.03,-137.10) (   0.90,-133.11)  454.69                80
 08/27/2021   18:40:16   (  -0.03,-137.09) (   0.08,-137.68)   66.28                80
 08/30/2021   06:38:37   (   0.03,-137.04) (  -0.02,-137.27)   25.93                80
 09/01/2021   18:39:29   (  -0.02,-136.99) (  -0.04,-136.83)   18.74                80