Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2022 12 3.  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)
 12/04/2022   10:47:40   (   0.00,-136.95) (   0.74,-140.12)  362.55                80
 12/05/2022   10:21:48   (   0.00,-136.94) (  -0.53,-134.51)  277.20                80
 12/06/2022   22:36:55   (  -0.00,-136.92) (  -0.27,-138.16)  141.38                80
 12/07/2022   22:16:23   (  -0.01,-136.92) (   0.96,-132.54)  497.99                80
 12/09/2022   10:28:36   (   0.01,-136.92) (  -0.14,-136.13)   89.37                80
 12/10/2022   22:43:45   (  -0.01,-136.89) (  -0.64,-139.80)  331.26                80
 12/11/2022   22:23:13   (  -0.02,-136.88) (   0.60,-134.18)  307.60                80
 12/13/2022   10:38:05   (   0.01,-136.88) (   0.19,-137.77)  100.90                80
 12/15/2022   22:30:03   (   0.00,-136.83) (   0.26,-135.82)  114.96                80
 12/17/2022   10:44:53   (  -0.00,-136.83) (   0.56,-139.40)  293.06                80