Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2021 5 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)
 05/20/2021   03:30:23   (  -0.02,-128.21) (  -0.46,-130.06)  211.93                80
 05/21/2021   03:15:59   (  -0.03,-128.23) (   0.23,-127.20)  117.41                80
 05/22/2021   03:04:15   (  -0.03,-128.24) (   0.86,-124.33)  446.66                80
 05/23/2021   15:36:50   (   0.02,-128.36) (   0.87,-132.14)  430.81                80
 05/24/2021   15:25:06   (   0.02,-128.38) (   0.22,-129.27)  101.61                80
 05/25/2021   15:16:01   (   0.03,-128.39) (  -0.43,-126.40)  227.34                80
 05/28/2021   03:36:56   (  -0.01,-128.34) (  -0.72,-131.35)  343.31                80
 05/29/2021   03:25:13   (  -0.01,-128.35) (  -0.02,-128.49)   15.50                80
 05/30/2021   03:10:48   (  -0.01,-128.36) (   0.61,-125.62)  312.54                80