Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 11 27.  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)
 11/28/2023   20:38:30   (   0.00,-104.65) (  -0.96,-108.98)  493.16                80
 11/29/2023   20:22:26   (  -0.00,-104.65) (   0.03,-104.45)   23.18                80
 12/02/2023   08:25:31   (   0.01,-104.68) (   0.13,-105.19)   58.33                80
 12/03/2023   08:04:06   (   0.02,-104.68) (  -0.86,-100.66)  457.93                80
 12/04/2023   20:26:03   (  -0.02,-104.66) (  -0.30,-105.97)  149.22                80
 12/05/2023   20:09:59   (  -0.02,-104.66) (   0.70,-101.44)  367.53                80
 12/07/2023   08:31:47   (   0.02,-104.70) (   0.49,-106.71)  229.36                80
 12/08/2023   08:10:23   (   0.02,-104.70) (  -0.51,-102.17)  287.19                80
 12/09/2023   20:32:20   (  -0.03,-104.67) (  -0.63,-107.49)  320.24                80
 12/10/2023   20:16:16   (  -0.03,-104.67) (   0.38,-102.96)  196.43                80