Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2022 12 12.  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)
 12/12/2022   22:17:34   (  -0.00,-136.90) (   0.91,-132.84)  463.56                80
 12/14/2022   10:35:53   (   0.01,-136.91) (   0.11,-137.26)   40.79                80
 12/16/2022   22:33:28   (  -0.01,-136.86) (   0.00,-136.67)   21.33                80
 12/18/2022   10:51:47   (   0.01,-136.86) (   0.95,-141.10)  483.09                80
 12/19/2022   10:28:08   (   0.02,-136.85) (  -0.14,-136.02)   93.29                80
 12/20/2022   22:46:42   (  -0.02,-136.80) (  -0.86,-140.51)  423.85                80
 12/21/2022   22:28:24   (  -0.02,-136.77) (   0.29,-135.44)  152.03                80
 12/23/2022   10:46:41   (   0.03,-136.76) (   0.72,-139.86)  353.38                80
 12/24/2022   10:23:01   (   0.03,-136.73) (  -0.38,-134.78)  221.75                80
 12/25/2022   22:41:36   (  -0.03,-136.66) (  -0.63,-139.27)  297.41                80