Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 8 7.  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)
 08/07/2023   22:38:26   (  -0.01,-136.99) (  -0.46,-138.98)  226.68                80
 08/08/2023   22:22:21   (  -0.02,-136.98) (   0.57,-134.45)  289.54                80
 08/10/2023   10:44:06   (   0.02,-136.97) (   0.63,-139.71)  312.09                80
 08/11/2023   10:22:40   (   0.03,-136.96) (  -0.35,-135.16)  203.67                80
 08/12/2023   22:44:34   (  -0.03,-136.94) (  -0.83,-140.46)  401.76                80
 08/13/2023   22:28:29   (  -0.03,-136.93) (   0.22,-135.93)  113.81                80
 08/15/2023   10:50:14   (   0.04,-136.90) (   0.98,-141.19)  488.64                80
 08/16/2023   10:28:47   (   0.04,-136.89) (  -0.01,-136.65)   26.62                80
 08/18/2023   22:31:55   (  -0.04,-136.85) (  -0.16,-137.41)   64.41                80
 08/19/2023   22:15:49   (  -0.04,-136.83) (   0.83,-132.87)  450.59                80