Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 5 22.  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)
 05/23/2025   10:21:15   (   0.00,-137.00) (  -0.73,-133.83)  362.22                80
 05/24/2025   22:40:33   (  -0.00,-137.00) (  -0.46,-139.14)  242.50                80
 05/25/2025   22:24:28   (  -0.00,-137.00) (   0.51,-134.60)  273.03                80
 05/27/2025   10:46:19   (  -0.00,-136.98) (   0.62,-139.89)  330.14                80
 05/28/2025   10:24:54   (  -0.01,-136.98) (  -0.35,-135.35)  184.75                80
 05/29/2025   22:46:52   (   0.01,-136.96) (  -0.79,-140.67)  421.70                80
 05/30/2025   22:30:48   (   0.02,-136.95) (   0.19,-136.13)   93.07                80
 06/02/2025   10:33:54   (  -0.02,-136.92) (  -0.04,-136.89)    4.39                80
 06/04/2025   22:34:27   (   0.03,-136.89) (  -0.18,-137.66)   87.80                80