Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 1 5.  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)
 01/06/2023   22:34:12   (  -0.01,-137.33) (  -0.06,-137.57)   26.97                80
 01/07/2023   22:18:07   (  -0.01,-137.33) (   0.97,-133.05)  488.93                80
 01/09/2023   10:39:54   (   0.01,-137.33) (   0.22,-138.32)  112.44                80
 01/10/2023   10:18:29   (   0.01,-137.32) (  -0.76,-133.78)  403.09                80
 01/11/2023   22:40:25   (  -0.01,-137.31) (  -0.41,-139.09)  203.30                80
 01/12/2023   22:24:21   (  -0.00,-137.30) (   0.62,-134.57)  312.07                80
 01/14/2023   10:46:08   (   0.00,-137.29) (   0.56,-139.84)  289.93                80
 01/15/2023   10:24:43   (   0.00,-137.28) (  -0.42,-135.30)  224.98                80
 01/16/2023   22:46:39   (  -0.01,-137.25) (  -0.74,-140.61)  382.67                80
 01/17/2023   22:30:33   (  -0.01,-137.23) (   0.24,-136.08)  131.73                80
 01/19/2023   10:52:21   (   0.01,-137.21) (   0.93,-141.35)  471.94                80