Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 2 9.  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)
 02/10/2023   10:39:31   (   0.01,-137.00) (   0.28,-138.30)  147.92                80
 02/11/2023   10:18:05   (   0.01,-137.00) (  -0.69,-133.76)  368.61                80
 02/12/2023   22:40:00   (  -0.01,-136.99) (  -0.45,-139.07)  236.20                80
 02/13/2023   22:23:53   (  -0.01,-136.98) (   0.53,-134.53)  279.80                80
 02/15/2023   10:45:39   (   0.01,-136.97) (   0.67,-139.79)  321.88                80
 02/16/2023   10:24:13   (   0.01,-136.96) (  -0.37,-135.26)  193.46                80
 02/17/2023   22:46:08   (  -0.02,-136.93) (  -0.81,-140.56)  413.07                80
 02/18/2023   22:27:21   (  -0.02,-136.92) (   0.18,-136.02)  102.01                80
 02/21/2023   10:30:20   (   0.02,-136.88) (   0.01,-136.74)   14.77                80