Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2022 12 4.  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)
 12/05/2022   10:21:49   (   0.02,-137.31) (  -0.62,-134.53)  317.44                80
 12/06/2022   22:36:56   (  -0.02,-137.29) (  -0.24,-138.17)  100.27                80
 12/09/2022   10:28:38   (   0.02,-137.27) (  -0.22,-136.15)  126.47                80
 12/10/2022   22:43:46   (  -0.01,-137.24) (  -0.61,-139.81)  293.24                80
 12/11/2022   22:23:14   (  -0.01,-137.22) (   0.69,-134.20)  344.62                80
 12/13/2022   10:38:06   (   0.00,-137.20) (   0.16,-137.78)   67.09                80
 12/14/2022   22:53:16   (  -0.00,-137.16) (  -0.96,-141.45)  488.05                80
 12/15/2022   22:27:24   (   0.00,-137.14) (   0.28,-135.83)  149.48                80
 12/17/2022   10:44:54   (   0.00,-137.12) (   0.53,-139.41)  261.88                80
 12/18/2022   10:19:01   (  -0.00,-137.09) (  -0.74,-133.80)  375.43                80