Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2021 6 18.  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   (  -0.10,-128.46) (   0.31,-130.21)  199.07                80
 06/19/2021   15:23:45   (  -0.10,-128.45) (  -0.37,-127.34)  127.43                80
 06/20/2021   15:12:01   (  -0.10,-128.45) (  -1.04,-124.48)  453.79                80
 06/22/2021   03:44:44   (   0.11,-128.36) (  -0.83,-132.30)  449.79                80
 06/23/2021   03:33:00   (   0.11,-128.35) (  -0.16,-129.43)  124.35                80
 06/24/2021   03:18:35   (   0.11,-128.33) (   0.51,-126.56)  200.93                80
 06/26/2021   15:39:17   (  -0.13,-128.34) (   0.60,-131.46)  356.99                80
 06/27/2021   15:27:32   (  -0.13,-128.32) (  -0.08,-128.60)   31.63                80
 06/28/2021   15:18:28   (  -0.13,-128.30) (  -0.76,-125.73)  293.80                80
 07/01/2021   03:39:27   (   0.14,-128.20) (  -0.46,-130.68)  284.41                80