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   15:32:49   (  -0.10,-128.46) (   0.33,-130.20)  198.97                80
 06/19/2021   15:23:45   (  -0.10,-128.46) (  -0.35,-127.34)  127.61                80
 06/20/2021   15:12:00   (  -0.10,-128.45) (  -1.02,-124.47)  454.01                80
 06/22/2021   03:44:45   (   0.11,-128.36) (  -0.79,-132.30)  449.67                80
 06/23/2021   03:33:00   (   0.11,-128.35) (  -0.12,-129.44)  124.17                80
 06/24/2021   03:18:36   (   0.11,-128.33) (   0.54,-126.57)  201.16                80
 06/26/2021   15:39:17   (  -0.13,-128.34) (   0.62,-131.46)  356.47                80
 06/27/2021   15:27:32   (  -0.13,-128.32) (  -0.06,-128.59)   31.04                80
 06/28/2021   15:18:28   (  -0.13,-128.31) (  -0.73,-125.73)  294.40                80
 07/01/2021   03:39:27   (   0.14,-128.21) (  -0.43,-130.69)  283.84                80
 07/02/2021   03:25:03   (   0.14,-128.18) (   0.25,-127.83)   41.37                80