Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2022 12 3.  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)
 12/04/2022   10:47:42   (  -0.00,-137.32) (   0.63,-140.15)  322.19                80
 12/05/2022   10:21:50   (   0.00,-137.31) (  -0.64,-134.53)  317.11                80
 12/06/2022   22:36:56   (  -0.01,-137.30) (  -0.22,-138.17)  100.49                80
 12/09/2022   10:28:38   (   0.02,-137.27) (  -0.24,-136.16)  126.90                80
 12/10/2022   22:43:46   (  -0.03,-137.24) (  -0.59,-139.81)  292.53                80
 12/11/2022   22:23:14   (  -0.03,-137.23) (   0.65,-134.19)  345.59                80
 12/13/2022   10:38:06   (   0.03,-137.20) (   0.14,-137.79)   65.77                80
 12/14/2022   22:50:35   (  -0.03,-137.17) (  -1.00,-141.44)  486.57                80
 12/15/2022   22:30:03   (  -0.03,-137.15) (   0.24,-135.82)  151.17                80
 12/17/2022   10:44:53   (   0.04,-137.12) (   0.57,-139.40)  260.05                80