Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 7 23.  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)
 07/23/2025   22:18:46   (   0.03,-137.01) (   0.89,-133.23)  430.24                80
 07/25/2025   10:37:53   (  -0.04,-137.00) (   0.31,-138.50)  171.48                80
 07/26/2025   10:21:49   (  -0.04,-137.00) (  -0.70,-133.97)  344.81                80
 07/27/2025   22:41:06   (   0.04,-137.01) (  -0.47,-139.28)  259.00                80
 07/28/2025   22:25:01   (   0.04,-137.01) (   0.55,-134.75)  257.27                80
 07/30/2025   10:44:09   (  -0.04,-136.99) (   0.65,-140.01)  344.79                80
 07/31/2025   10:28:04   (  -0.05,-136.99) (  -0.36,-135.48)  171.09                80
 08/01/2025   22:47:22   (   0.05,-136.99) (  -0.79,-140.80)  433.76                80
 08/02/2025   22:31:17   (   0.05,-136.98) (   0.23,-136.27)   81.62                80
 08/05/2025   10:31:40   (  -0.06,-136.94) (  -0.04,-137.00)    7.39                80