Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2022 12 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 12/02/2022   22:30:06   (   0.01,-137.32) (   0.18,-136.54)   88.57                80
 12/04/2022   10:47:43   (  -0.01,-137.32) (   0.63,-140.15)  322.30                80
 12/05/2022   10:21:50   (  -0.00,-137.32) (  -0.63,-134.53)  317.12                80
 12/06/2022   22:39:38   (  -0.01,-137.30) (  -0.19,-138.18)  100.51                80
 12/09/2022   10:28:39   (   0.01,-137.28) (  -0.23,-136.16)  126.71                80
 12/10/2022   22:46:29   (  -0.01,-137.25) (  -0.57,-139.83)  293.09                80
 12/11/2022   22:20:36   (   0.00,-137.24) (   0.65,-134.21)  344.77                80
 12/13/2022   10:38:09   (  -0.00,-137.22) (   0.11,-137.81)   66.62                80
 12/14/2022   22:53:20   (   0.00,-137.18) (  -0.95,-141.47)  487.75                80