Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 2 13.  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)
 02/13/2023   22:23:58   (  -0.01,-136.99) (   0.55,-134.55)  278.01                80
 02/15/2023   10:45:46   (   0.02,-136.97) (   0.68,-139.81)  324.96                80
 02/16/2023   10:24:22   (   0.02,-136.96) (  -0.38,-135.30)  189.69                80
 02/17/2023   22:46:19   (  -0.02,-136.93) (  -0.83,-140.60)  417.76                80
 02/18/2023   22:27:34   (  -0.02,-136.92) (   0.18,-136.07)   96.62                80
 02/21/2023   10:30:37   (   0.02,-136.88) (   0.02,-136.81)    7.23                80
 02/23/2023   22:36:29   (  -0.02,-136.83) (  -0.18,-137.59)   86.38                80
 02/24/2023   22:15:04   (  -0.02,-136.81) (   0.84,-133.07)  427.69                80
 02/26/2023   10:39:32   (   0.02,-136.78) (   0.35,-138.34)  176.71                80
 02/27/2023   10:18:06   (   0.02,-136.76) (  -0.62,-133.80)  336.94                80