Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 1 3.  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)
 01/05/2025   08:27:46   (   0.01,-104.68) (   0.11,-105.18)   56.67                80
 01/06/2025   08:06:19   (   0.01,-104.68) (  -0.92,-100.65)  460.06                80
 01/07/2025   20:28:11   (  -0.01,-104.63) (  -0.33,-105.92)  148.53                80
 01/08/2025   20:12:04   (  -0.02,-104.62) (   0.72,-101.39)  368.59                80
 01/10/2025   08:33:48   (   0.02,-104.67) (   0.47,-106.65)  225.86                80
 01/11/2025   08:12:22   (   0.02,-104.66) (  -0.58,-102.12)  290.73                80
 01/12/2025   20:34:13   (  -0.02,-104.60) (  -0.64,-107.40)  318.71                80
 01/13/2025   20:18:06   (  -0.02,-104.60) (   0.36,-102.85)  198.42                80
 01/15/2025   08:39:50   (   0.02,-104.65) (   0.80,-108.11)  394.89                80
 01/16/2025   08:18:23   (   0.02,-104.65) (  -0.21,-103.57)  122.19                80