Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 6 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)
 06/14/2025   08:27:07   (  -0.00,-104.76) (   0.08,-105.17)   46.65                80
 06/15/2025   08:05:43   (  -0.01,-104.77) (  -0.91,-100.64)  470.34                80
 06/16/2025   20:27:41   (   0.00,-104.79) (  -0.23,-105.96)  132.52                80
 06/17/2025   20:11:37   (   0.00,-104.80) (   0.75,-101.42)  384.87                80
 06/19/2025   08:33:25   (   0.00,-104.82) (   0.42,-106.70)  214.27                80
 06/20/2025   08:12:02   (  -0.00,-104.83) (  -0.62,-102.18)  302.78                80
 06/21/2025   20:33:59   (   0.00,-104.84) (  -0.58,-107.48)  300.79                80
 06/22/2025   20:17:54   (   0.01,-104.85) (   0.41,-102.95)  216.24                80
 06/24/2025   08:39:43   (  -0.01,-104.86) (   0.76,-108.22)  383.15                80
 06/25/2025   08:18:18   (  -0.00,-104.87) (  -0.24,-103.69)  133.73                80