Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-19
TLE Epoch: 2021 12 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 12/13/2021   04:47:13   (   0.05,-137.21) (  -0.91,-141.21)  456.87                80
 12/14/2021   04:35:27   (   0.05,-137.21) (  -0.21,-138.34)  128.42                80
 12/15/2021   04:20:59   (   0.05,-137.21) (   0.43,-135.45)  199.91                80
 12/17/2021   16:41:42   (  -0.04,-137.21) (   0.69,-140.36)  359.38                80
 12/18/2021   16:29:56   (  -0.03,-137.20) (   0.01,-137.49)   31.93                80
 12/19/2021   16:20:48   (  -0.03,-137.20) (  -0.62,-134.60)  295.64                80
 12/22/2021   04:38:54   (   0.02,-137.16) (  -0.56,-139.51)  269.37                80
 12/23/2021   04:29:47   (   0.01,-137.15) (   0.14,-136.64)   57.67                80
 12/24/2021   04:18:00   (   0.01,-137.13) (   0.78,-133.76)  384.52                80