Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2022 12 22.  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)
 12/22/2022   22:18:06   (  -0.02,-136.93) (   0.89,-132.98)  450.48                80
 12/24/2022   10:39:53   (   0.02,-136.93) (   0.33,-138.25)  150.03                80
 12/25/2022   10:18:29   (   0.02,-136.93) (  -0.69,-133.72)  365.24                80
 12/26/2022   22:40:25   (  -0.01,-136.90) (  -0.50,-139.03)  242.90                80
 12/27/2022   22:24:21   (   0.01,-136.89) (   0.52,-134.50)  272.22                80
 12/29/2022   10:46:09   (  -0.01,-136.90) (   0.63,-139.78)  328.66                80
 12/30/2022   10:24:45   (  -0.02,-136.89) (  -0.39,-135.26)  186.40                80
 12/31/2022   22:46:41   (   0.01,-136.86) (  -0.79,-140.57)  421.88                80
 01/01/2023   22:30:35   (   0.01,-136.85) (   0.17,-136.03)   93.14                80
 01/04/2023   10:30:58   (   0.01,-136.83) (  -0.00,-136.77)    6.40                80