Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2022 12 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-18)   GOES-18 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 12/18/2022   10:51:47   (   0.00,-136.93) (   0.94,-141.11)  475.92                80
 12/19/2022   10:28:09   (   0.01,-136.93) (  -0.21,-136.04)  101.67                80
 12/20/2022   22:46:43   (  -0.00,-136.90) (  -0.79,-140.53)  412.86                80
 12/21/2022   22:28:24   (  -0.00,-136.89) (   0.30,-135.45)  164.16                80
 12/23/2022   10:46:42   (   0.00,-136.89) (   0.65,-139.88)  340.42                80
 12/24/2022   10:23:03   (   0.00,-136.87) (  -0.45,-134.80)  235.98                80
 12/25/2022   22:41:37   (  -0.00,-136.83) (  -0.56,-139.28)  280.39                80
 12/26/2022   22:23:18   (  -0.01,-136.81) (   0.60,-134.22)  296.03                80
 12/28/2022   10:41:35   (   0.01,-136.80) (   0.42,-138.63)  208.67                80
 12/29/2022   10:17:55   (   0.01,-136.78) (  -0.69,-133.55)  367.58                80
 12/30/2022   22:36:30   (  -0.01,-136.73) (  -0.32,-138.04)  149.29                80