Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 5 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 05/08/2023   08:25:22   (   0.00,-104.72) (   0.05,-104.99)   29.68                80
 05/09/2023   08:03:57   (  -0.00,-104.72) (  -0.94,-100.45)  485.61                80
 05/10/2023   20:25:55   (   0.00,-104.71) (  -0.24,-105.76)  120.11                80
 05/11/2023   20:09:50   (   0.00,-104.71) (   0.75,-101.23)  395.60                80
 05/13/2023   08:31:39   (  -0.00,-104.71) (   0.37,-106.52)  205.95                80
 05/14/2023   08:10:15   (  -0.00,-104.70) (  -0.62,-101.99)  309.75                80
 05/15/2023   20:32:11   (   0.00,-104.70) (  -0.60,-107.29)  295.82                80
 05/16/2023   20:16:08   (   0.00,-104.70) (   0.46,-102.77)  220.38                80
 05/18/2023   08:37:56   (  -0.01,-104.70) (   0.72,-108.04)  380.15                80
 05/19/2023   08:16:32   (  -0.01,-104.70) (  -0.28,-103.51)  135.56                80