Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2021 6 14.  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)
 06/14/2021   03:38:24   (   0.09,-128.43) (   0.00,-131.16)  303.60                80
 06/15/2021   03:23:51   (   0.09,-128.42) (   0.13,-128.17)   28.63                80
 06/16/2021   03:12:06   (   0.09,-128.41) (   0.79,-125.30)  354.92                80
 06/18/2021   15:32:49   (  -0.10,-128.45) (   0.34,-130.20)  200.07                80
 06/19/2021   15:23:45   (  -0.10,-128.44) (  -0.33,-127.33)  126.28                80
 06/20/2021   15:12:00   (  -0.09,-128.43) (  -1.01,-124.47)  452.43                80
 06/22/2021   03:44:44   (   0.11,-128.35) (  -0.80,-132.30)  450.91                80
 06/23/2021   03:33:00   (   0.11,-128.33) (  -0.14,-129.44)  125.66                80
 06/24/2021   03:18:36   (   0.11,-128.31) (   0.53,-126.57)  199.41                80
 06/26/2021   15:39:17   (  -0.12,-128.31) (   0.58,-131.47)  359.67                80
 06/27/2021   15:27:32   (  -0.12,-128.29) (  -0.04,-128.59)   34.53                80