Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 12 21.  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)
 12/22/2023   10:32:30   (  -0.00,-137.00) (  -0.00,-136.95)    5.36                80
 12/24/2023   22:33:01   (  -0.02,-136.97) (  -0.21,-137.71)   84.90                80
 12/25/2023   22:16:57   (  -0.02,-136.96) (   0.81,-133.18)  430.57                80
 12/27/2023   10:38:45   (   0.02,-136.95) (   0.33,-138.46)  170.78                80
 12/28/2023   10:17:19   (   0.01,-136.94) (  -0.64,-133.91)  344.30                80
 12/29/2023   22:41:56   (  -0.01,-136.91) (  -0.52,-139.22)  263.13                80
 12/30/2023   22:20:31   (   0.00,-136.90) (   0.51,-134.69)  251.79                80
 01/01/2024   10:44:58   (  -0.00,-136.88) (   0.68,-139.96)  349.97                80
 01/02/2024   10:23:34   (  -0.01,-136.87) (  -0.36,-135.43)  164.84                80
 01/03/2024   22:48:09   (   0.01,-136.83) (  -0.85,-140.72)  442.94                80