Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 5 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-18)   GOES-18 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 05/13/2025   22:46:37   (   0.02,-137.00) (  -0.78,-140.60)  409.91                80
 05/14/2025   22:30:33   (   0.02,-137.00) (   0.24,-136.08)  105.88                80
 05/16/2025   10:49:43   (  -0.02,-137.00) (   0.97,-141.35)  496.36                80
 05/17/2025   10:33:39   (  -0.01,-136.99) (  -0.05,-136.82)   19.15                80
 05/19/2025   22:34:13   (   0.01,-136.98) (  -0.13,-137.60)   71.35                80
 05/20/2025   22:18:10   (   0.00,-136.97) (   0.90,-133.08)  443.82                80
 05/22/2025   10:37:19   (  -0.01,-136.95) (   0.31,-138.35)  159.62                80
 05/23/2025   10:21:15   (  -0.01,-136.94) (  -0.72,-133.83)  355.07                80
 05/24/2025   22:40:33   (   0.02,-136.92) (  -0.47,-139.14)  252.30                80
 05/25/2025   22:24:29   (   0.02,-136.90) (   0.56,-134.61)  261.85                80