Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 2 20.  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)
 02/21/2023   10:33:17   (   0.02,-136.88) (   0.03,-136.81)    7.48                80
 02/23/2023   22:36:29   (  -0.02,-136.83) (  -0.21,-137.59)   86.50                80
 02/24/2023   22:15:04   (  -0.02,-136.81) (   0.81,-133.06)  427.53                80
 02/26/2023   10:39:31   (   0.02,-136.78) (   0.40,-138.33)  176.93                80
 02/27/2023   10:18:07   (   0.02,-136.76) (  -0.63,-133.80)  336.65                80
 02/28/2023   22:42:43   (  -0.03,-136.72) (  -0.56,-139.11)  272.38                80
 03/01/2023   22:21:19   (  -0.03,-136.69) (   0.47,-134.58)  240.91                80
 03/03/2023   10:45:46   (   0.04,-136.65) (   0.73,-139.85)  364.54                80
 03/04/2023   10:24:21   (   0.03,-136.62) (  -0.25,-135.31)  148.43                80
 03/05/2023   22:48:57   (  -0.04,-136.57) (  -0.92,-140.62)  461.40                80