Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2021 6 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 06/18/2021   15:32:50   (  -0.09,-128.45) (   0.31,-130.21)  200.39                80
 06/19/2021   15:23:45   (  -0.09,-128.44) (  -0.36,-127.34)  125.85                80
 06/20/2021   15:12:01   (  -0.09,-128.43) (  -1.04,-124.48)  451.93                80
 06/22/2021   03:44:44   (   0.10,-128.34) (  -0.83,-132.30)  451.52                80
 06/23/2021   03:33:00   (   0.10,-128.33) (  -0.16,-129.43)  126.35                80
 06/24/2021   03:18:35   (   0.10,-128.30) (   0.50,-126.56)  198.63                80
 06/26/2021   15:39:17   (  -0.12,-128.30) (   0.60,-131.46)  360.67                80
 06/27/2021   15:27:32   (  -0.12,-128.28) (  -0.08,-128.60)   35.70                80
 06/28/2021   15:18:27   (  -0.12,-128.26) (  -0.70,-125.72)  289.55                80