Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 11 29.  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)
 11/29/2023   20:22:27   (   0.01,-104.65) (   0.08,-104.46)   22.94                80
 12/02/2023   08:25:30   (  -0.00,-104.67) (   0.13,-105.19)   59.85                80
 12/03/2023   08:04:07   (  -0.00,-104.67) (  -0.92,-100.67)  456.16                80
 12/04/2023   20:26:03   (  -0.00,-104.64) (  -0.30,-105.97)  151.21                80
 12/05/2023   20:09:59   (  -0.00,-104.64) (   0.70,-101.44)  365.27                80
 12/07/2023   08:31:47   (   0.00,-104.67) (   0.49,-106.71)  232.31                80
 12/08/2023   08:10:24   (   0.00,-104.67) (  -0.58,-102.19)  283.95                80
 12/09/2023   20:32:20   (  -0.00,-104.64) (  -0.62,-107.49)  323.83                80
 12/10/2023   20:16:15   (  -0.00,-104.64) (   0.39,-102.96)  192.50                80
 12/12/2023   08:38:04   (  -0.00,-104.67) (   0.78,-108.23)  405.13                80
 12/13/2023   08:16:39   (  -0.00,-104.67) (  -0.24,-103.70)  110.68                80