Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 7 2.  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)
 07/02/2023   22:16:40   (  -0.01,-136.99) (   0.85,-133.02)  451.14                80
 07/04/2023   10:38:27   (   0.01,-136.98) (   0.30,-138.30)  150.44                80
 07/05/2023   10:17:02   (   0.01,-136.96) (  -0.70,-133.76)  364.68                80
 07/06/2023   22:38:57   (  -0.00,-136.94) (  -0.50,-139.06)  242.65                80
 07/07/2023   22:22:51   (  -0.00,-136.92) (   0.50,-134.53)  272.48                80
 07/09/2023   10:44:39   (   0.00,-136.91) (   0.64,-139.80)  329.45                80
 07/10/2023   10:23:13   (   0.00,-136.89) (  -0.36,-135.27)  185.45                80
 07/11/2023   22:45:09   (  -0.00,-136.86) (  -0.82,-140.57)  422.44                80
 07/12/2023   22:29:03   (  -0.01,-136.84) (   0.18,-136.04)   92.17                80
 07/15/2023   10:29:24   (   0.01,-136.79) (   0.01,-136.76)    3.44                80