Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2021 4 1.  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)
 04/03/2021   15:23:31   (   0.11,-128.33) (   0.52,-130.17)  209.33                80
 04/04/2021   15:09:07   (   0.11,-128.32) (  -0.14,-127.31)  115.48                80
 04/05/2021   14:57:24   (   0.10,-128.30) (  -0.80,-124.44)  440.25                80
 04/07/2021   03:30:02   (  -0.11,-128.17) (  -1.05,-132.25)  464.94                80
 04/08/2021   03:18:18   (  -0.11,-128.15) (  -0.38,-129.38)  139.88                80
 04/09/2021   03:09:14   (  -0.11,-128.14) (   0.24,-126.51)  185.26                80
 04/11/2021   15:30:07   (   0.11,-128.19) (   0.86,-131.45)  372.03                80
 04/12/2021   15:18:23   (   0.11,-128.17) (   0.20,-128.59)   47.40                80
 04/13/2021   15:04:00   (   0.11,-128.15) (  -0.46,-125.72)  277.08                80