Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2021 5 16.  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)
 05/17/2021   15:09:30   (   0.03,-128.24) (  -0.70,-125.12)  355.75                80
 05/20/2021   03:30:23   (  -0.02,-128.20) (  -0.47,-130.06)  212.07                80
 05/21/2021   03:15:59   (  -0.03,-128.22) (   0.22,-127.20)  117.21                80
 05/22/2021   03:04:16   (  -0.03,-128.24) (   0.91,-124.34)  446.40                80
 05/23/2021   15:36:50   (   0.02,-128.35) (   0.88,-132.14)  431.27                80
 05/24/2021   15:25:06   (   0.03,-128.37) (   0.23,-129.27)  102.13                80
 05/25/2021   15:16:01   (   0.03,-128.39) (  -0.42,-126.40)  226.76                80
 05/28/2021   03:36:56   (  -0.02,-128.33) (  -0.73,-131.34)  343.90                80
 05/29/2021   03:25:12   (  -0.01,-128.34) (  -0.03,-128.49)   16.07                80
 05/30/2021   03:10:48   (  -0.02,-128.35) (   0.60,-125.61)  311.84                80