Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2021 5 23.  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)
 05/23/2021   15:36:50   (   0.01,-128.37) (   0.90,-132.13)  429.59                80
 05/24/2021   15:25:06   (   0.01,-128.39) (   0.19,-129.27)  100.16                80
 05/25/2021   15:16:02   (   0.01,-128.41) (  -0.46,-126.40)  229.07                80
 05/28/2021   03:36:56   (   0.00,-128.36) (  -0.68,-131.35)  341.76                80
 05/29/2021   03:25:12   (   0.00,-128.37) (  -0.05,-128.48)   13.76                80
 05/30/2021   03:10:49   (   0.00,-128.38) (   0.65,-125.62)  314.66                80
 06/01/2021   15:31:36   (  -0.02,-128.49) (   0.46,-130.55)  234.79                80
 06/02/2021   15:22:32   (  -0.01,-128.50) (  -0.21,-127.68)   93.87                80
 06/03/2021   15:10:47   (  -0.01,-128.51) (  -0.87,-124.81)  422.58                80
 06/05/2021   03:43:29   (   0.02,-128.45) (  -0.92,-132.64)  477.26                80