Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 5 19.  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)
 05/19/2025   22:34:13   (   0.01,-137.00) (  -0.12,-137.60)   69.03                80
 05/20/2025   22:18:10   (   0.00,-137.00) (   0.90,-133.08)  447.58                80
 05/22/2025   10:37:19   (   0.00,-137.00) (   0.30,-138.35)  153.90                80
 05/23/2025   10:21:15   (  -0.01,-137.00) (  -0.73,-133.83)  361.92                80
 05/24/2025   22:40:33   (   0.02,-137.00) (  -0.47,-139.14)  243.38                80
 05/25/2025   22:24:29   (   0.02,-137.00) (   0.56,-134.61)  272.06                80
 05/27/2025   10:43:39   (  -0.02,-136.98) (   0.63,-139.89)  330.97                80
 05/28/2025   10:27:35   (  -0.02,-136.97) (  -0.41,-135.36)  184.06                80
 05/29/2025   22:46:51   (   0.01,-136.96) (  -0.84,-140.66)  422.44                80
 05/30/2025   22:30:48   (   0.01,-136.95) (   0.19,-136.13)   92.45                80
 06/02/2025   10:31:13   (  -0.00,-136.91) (   0.01,-136.88)    4.28                80