Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2022 12 25.  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)
 12/26/2022   22:40:25   (  -0.00,-136.91) (  -0.50,-139.03)  242.26                80
 12/27/2022   22:24:21   (  -0.01,-136.90) (   0.52,-134.50)  273.32                80
 12/29/2022   10:46:09   (   0.01,-136.91) (   0.63,-139.78)  327.20                80
 12/30/2022   10:24:44   (   0.01,-136.90) (  -0.33,-135.24)  188.15                80
 12/31/2022   22:46:40   (  -0.01,-136.87) (  -0.86,-140.55)  420.04                80
 01/01/2023   22:30:36   (  -0.01,-136.86) (   0.16,-136.03)   95.03                80
 01/04/2023   10:30:58   (   0.01,-136.84) (   0.02,-136.77)    8.62                80
 01/06/2023   22:34:10   (  -0.01,-136.79) (  -0.17,-137.55)   87.11                80
 01/07/2023   22:18:05   (  -0.01,-136.77) (   0.80,-133.01)  427.09                80