Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-19
TLE Epoch: 2021 6 30.  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)
 06/30/2021   03:51:43   (  -0.04,-137.18) (   0.70,-133.97)  366.64                80
 07/02/2021   16:09:44   (   0.03,-137.19) (   0.43,-138.86)  191.48                80
 07/03/2021   16:00:39   (   0.03,-137.18) (  -0.25,-136.00)  135.41                80
 07/04/2021   15:48:55   (   0.03,-137.18) (  -0.93,-133.14)  462.10                80
 07/06/2021   04:18:59   (  -0.03,-137.15) (  -0.90,-140.97)  435.14                80
 07/07/2021   04:07:13   (  -0.03,-137.14) (  -0.28,-138.09)  109.02                80
 07/08/2021   03:58:09   (  -0.02,-137.13) (   0.41,-135.23)  216.97                80
 07/10/2021   16:16:10   (   0.01,-137.10) (   0.72,-140.12)  345.04                80
 07/11/2021   16:04:25   (   0.00,-137.08) (   0.04,-137.25)   19.74                80
 07/12/2021   15:55:21   (   0.00,-137.06) (  -0.64,-134.39)  305.49                80