Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 1 6.  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)
 01/06/2023   22:34:11   (   0.02,-136.87) (  -0.12,-137.56)   78.39                80
 01/07/2023   22:18:05   (   0.02,-136.86) (   0.86,-133.02)  436.39                80
 01/09/2023   10:39:53   (  -0.03,-136.85) (   0.27,-138.31)  165.42                80
 01/10/2023   10:18:28   (  -0.03,-136.83) (  -0.70,-133.77)  349.08                80
 01/11/2023   22:40:24   (   0.03,-136.79) (  -0.46,-139.08)  260.33                80
 01/12/2023   22:24:19   (   0.03,-136.78) (   0.51,-134.54)  254.10                80
 01/14/2023   10:46:06   (  -0.04,-136.76) (   0.67,-139.81)  348.22                80
 01/15/2023   10:24:42   (  -0.04,-136.74) (  -0.37,-135.29)  165.65                80
 01/16/2023   22:46:37   (   0.04,-136.68) (  -0.84,-140.59)  445.34                80
 01/17/2023   22:30:32   (   0.05,-136.66) (   0.20,-136.07)   67.98                80