Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2022 12 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 12/21/2022   22:34:12   (  -0.02,-137.34) (  -0.06,-137.52)   20.32                80
 12/22/2022   22:18:07   (  -0.02,-137.34) (   0.95,-133.00)  495.43                80
 12/24/2022   10:39:56   (   0.02,-137.33) (   0.20,-138.28)  106.70                80
 12/25/2022   10:18:31   (   0.01,-137.33) (  -0.82,-133.75)  408.48                80
 12/26/2022   22:43:07   (  -0.00,-137.32) (  -0.38,-139.06)  198.09                80
 12/27/2022   22:21:43   (   0.01,-137.31) (   0.64,-134.53)  317.01                80
 12/29/2022   10:46:10   (  -0.01,-137.30) (   0.57,-139.80)  285.41                80
 12/30/2022   10:24:46   (  -0.01,-137.29) (  -0.46,-135.27)  229.67                80
 12/31/2022   22:49:22   (   0.01,-137.27) (  -0.73,-140.58)  376.96                80
 01/01/2023   22:27:58   (   0.01,-137.26) (   0.30,-136.06)  137.92                80
 01/03/2023   10:52:25   (   0.00,-137.24) (   0.90,-141.32)  465.16                80