Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 4 4.  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)
 04/05/2025   10:21:10   (   0.00,-136.98) (  -0.73,-133.78)  365.27                80
 04/06/2025   22:43:04   (  -0.00,-136.97) (  -0.47,-139.08)  239.52                80
 04/07/2025   22:21:38   (  -0.01,-136.97) (   0.52,-134.54)  276.74                80
 04/09/2025   10:46:03   (   0.01,-136.96) (   0.67,-139.79)  324.11                80
 04/10/2025   10:24:38   (   0.01,-136.95) (  -0.38,-135.27)  192.03                80
 04/11/2025   22:49:11   (  -0.01,-136.93) (  -0.84,-140.55)  413.03                80
 04/12/2025   22:27:45   (  -0.00,-136.92) (   0.21,-136.02)  102.84                80
 04/14/2025   10:52:11   (   0.01,-136.90) (   0.97,-141.28)  498.95                80
 04/15/2025   10:30:44   (   0.01,-136.89) (  -0.03,-136.74)   16.44                80
 04/17/2025   22:33:51   (  -0.02,-136.84) (  -0.16,-137.50)   74.73                80