Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 11 18.  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)
 11/18/2023   20:25:52   (   0.00,-104.65) (  -0.28,-105.93)  145.94                80
 11/19/2023   20:09:49   (   0.01,-104.65) (   0.75,-101.41)  369.82                80
 11/21/2023   08:31:38   (  -0.01,-104.68) (   0.43,-106.68)  228.43                80
 11/22/2023   08:10:15   (  -0.01,-104.67) (  -0.60,-102.16)  287.43                80
 11/23/2023   20:32:12   (   0.00,-104.65) (  -0.61,-107.46)  320.36                80
 11/24/2023   20:16:07   (   0.00,-104.65) (   0.36,-102.92)  195.92                80
 11/26/2023   08:37:57   (   0.01,-104.68) (   0.81,-108.20)  401.54                80
 11/27/2023   08:16:33   (   0.01,-104.68) (  -0.22,-103.68)  114.35                80
 11/28/2023   20:41:11   (  -0.02,-104.65) (  -0.98,-108.98)  493.85                80
 11/29/2023   20:19:47   (  -0.01,-104.65) (   0.06,-104.46)   22.37                80