Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 2 16.  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)
 02/17/2023   22:46:19   (  -0.02,-136.93) (  -0.81,-140.61)  417.73                80
 02/18/2023   22:30:13   (  -0.02,-136.92) (   0.14,-136.06)   96.71                80
 02/21/2023   10:30:37   (   0.02,-136.88) (  -0.00,-136.82)    7.37                80
 02/23/2023   22:36:29   (  -0.02,-136.83) (  -0.16,-137.60)   86.37                80
 02/24/2023   22:15:04   (  -0.02,-136.81) (   0.81,-133.06)  427.75                80
 02/26/2023   10:39:31   (   0.02,-136.78) (   0.39,-138.33)  176.61                80
 02/27/2023   10:18:06   (   0.02,-136.76) (  -0.65,-133.80)  337.03                80
 02/28/2023   22:42:42   (  -0.03,-136.72) (  -0.58,-139.10)  271.87                80
 03/01/2023   22:21:17   (  -0.03,-136.69) (   0.46,-134.58)  241.51                80