Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2022 12 30.  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)
 12/30/2022   10:24:44   (  -0.00,-136.94) (  -0.36,-135.25)  192.19                80
 12/31/2022   22:46:40   (  -0.00,-136.92) (  -0.83,-140.56)  414.65                80
 01/01/2023   22:30:36   (  -0.00,-136.92) (   0.19,-136.03)  101.22                80
 01/03/2023   10:52:23   (   0.01,-136.93) (   1.00,-141.30)  498.94                80
 01/04/2023   10:30:59   (   0.01,-136.92) (  -0.02,-136.77)   16.42                80
 01/06/2023   22:34:10   (  -0.02,-136.88) (  -0.19,-137.55)   76.69                80
 01/07/2023   22:18:05   (  -0.02,-136.87) (   0.85,-133.02)  438.30                80
 01/09/2023   10:39:52   (   0.02,-136.86) (   0.35,-138.29)  163.01                80
 01/10/2023   10:18:28   (   0.02,-136.85) (  -0.69,-133.77)  351.59                80
 01/11/2023   22:40:23   (  -0.02,-136.81) (  -0.54,-139.07)  257.59                80
 01/12/2023   22:24:19   (  -0.02,-136.79) (   0.50,-134.54)  256.89                80