Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 7 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 07/13/2025   20:24:18   (  -0.01,-104.72) (   0.06,-104.49)   26.43                80
 07/16/2025   08:27:21   (   0.01,-104.71) (   0.13,-105.23)   58.62                80
 07/17/2025   08:05:56   (   0.01,-104.71) (  -0.87,-100.69)  457.55                80
 07/18/2025   20:27:54   (  -0.02,-104.72) (  -0.32,-106.00)  146.64                80
 07/19/2025   20:11:49   (  -0.02,-104.72) (   0.69,-101.47)  369.55                80
 07/21/2025   08:33:36   (   0.03,-104.70) (   0.51,-106.73)  232.02                80
 07/22/2025   08:12:12   (   0.03,-104.70) (  -0.50,-102.20)  283.87                80
 07/23/2025   20:34:09   (  -0.04,-104.70) (  -0.68,-107.51)  320.85                80
 07/24/2025   20:18:05   (  -0.04,-104.70) (   0.33,-102.98)  195.41                80
 07/26/2025   08:39:53   (   0.05,-104.70) (   0.82,-108.26)  405.37                80