Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 10 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)
 10/24/2023   10:37:55   (  -0.00,-137.00) (   0.31,-138.27)  145.32                80
 10/25/2023   10:16:32   (  -0.00,-136.99) (  -0.73,-133.75)  369.72                80
 10/26/2023   22:38:31   (   0.00,-136.98) (  -0.45,-139.07)  237.72                80
 10/27/2023   22:22:28   (   0.00,-136.97) (   0.53,-134.54)  277.15                80
 10/29/2023   10:41:38   (  -0.00,-136.96) (   0.64,-139.82)  325.39                80
 10/30/2023   10:25:35   (   0.00,-136.95) (  -0.35,-135.29)  189.04                80
 10/31/2023   22:44:54   (   0.00,-136.93) (  -0.82,-140.61)  419.66                80
 11/01/2023   22:28:51   (   0.00,-136.91) (   0.18,-136.08)   94.32                80
 11/04/2023   10:31:57   (  -0.02,-136.87) (  -0.01,-136.84)    4.47                80