Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 2 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)
 02/23/2023   22:35:12   (   0.00,-137.00) (   0.00,-137.63)   70.38                 0
 02/24/2023   22:17:46   (   0.00,-137.00) (   0.90,-133.08)  447.14                80
 02/26/2023   10:39:33   (  -0.00,-136.99) (   0.30,-138.35)  154.34                80
 02/27/2023   10:18:09   (  -0.00,-136.99) (  -0.73,-133.82)  361.06                80
 02/28/2023   22:40:05   (   0.01,-136.97) (  -0.46,-139.13)  245.78                80
 03/01/2023   22:23:59   (   0.01,-136.96) (   0.52,-134.59)  269.30                80
 03/03/2023   10:43:08   (  -0.01,-136.94) (   0.62,-139.87)  333.31                80
 03/04/2023   10:27:02   (  -0.02,-136.93) (  -0.36,-135.34)  181.51                80
 03/05/2023   22:46:18   (   0.02,-136.91) (  -0.81,-140.65)  426.12                80
 03/06/2023   22:30:13   (   0.02,-136.89) (   0.17,-136.11)   88.62                80
 03/09/2023   10:33:16   (  -0.02,-136.85) (  -0.04,-136.86)    1.86                80