Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 2 19.  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)
 02/19/2023   20:26:54   (  -0.04,-104.66) (  -0.30,-105.84)  133.89                80
 02/20/2023   20:10:50   (  -0.04,-104.67) (   0.71,-101.31)  383.17                80
 02/22/2023   08:32:38   (   0.04,-104.67) (   0.44,-106.59)  217.65                80
 02/23/2023   08:11:13   (   0.04,-104.68) (  -0.52,-102.05)  299.52                80
 02/24/2023   20:33:10   (  -0.04,-104.71) (  -0.61,-107.37)  302.33                80
 02/25/2023   20:17:04   (  -0.04,-104.72) (   0.35,-102.83)  215.08                80
 02/27/2023   08:38:53   (   0.05,-104.73) (   0.79,-108.11)  385.25                80
 02/28/2023   08:17:27   (   0.05,-104.73) (  -0.18,-103.57)  131.96                80
 03/01/2023   20:39:24   (  -0.06,-104.76) (  -1.00,-108.88)  470.14                80
 03/02/2023   20:23:19   (  -0.06,-104.77) (   0.04,-104.35)   47.29                80