Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-19
TLE Epoch: 2021 4 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 04/18/2021   15:46:22   (   0.02,-137.19) (  -0.22,-136.07)  126.56                80
 04/19/2021   15:34:38   (   0.02,-137.18) (  -0.89,-133.21)  452.43                80
 04/21/2021   04:09:55   (  -0.02,-137.15) (  -0.91,-141.01)  440.70                80
 04/22/2021   03:58:11   (  -0.02,-137.14) (  -0.23,-138.15)  115.11                80
 04/23/2021   03:43:47   (  -0.02,-137.13) (   0.39,-135.28)  210.47                80
 04/25/2021   16:07:20   (   0.02,-137.09) (   0.76,-140.22)  357.06                80
 04/26/2021   15:55:37   (   0.02,-137.08) (   0.08,-137.36)   32.10                80
 04/27/2021   15:41:14   (   0.02,-137.05) (  -0.60,-134.50)  292.66                80
 04/30/2021   04:04:44   (  -0.02,-136.99) (  -0.60,-139.42)  278.15                80
 05/01/2021   03:50:21   (  -0.01,-136.96) (   0.08,-136.56)   45.84                80