Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2021 5 30.  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)
 05/30/2021   03:10:49   (   0.02,-128.37) (   0.68,-125.63)  314.10                80
 06/01/2021   15:31:37   (  -0.03,-128.49) (   0.43,-130.55)  234.80                80
 06/02/2021   15:22:32   (  -0.03,-128.50) (  -0.23,-127.68)   93.76                80
 06/03/2021   15:10:48   (  -0.03,-128.51) (  -0.89,-124.81)  422.35                80
 06/05/2021   03:43:28   (   0.04,-128.44) (  -0.96,-132.62)  478.51                80
 06/06/2021   03:31:45   (   0.04,-128.45) (  -0.26,-129.77)  150.50                80
 06/07/2021   03:17:20   (   0.03,-128.45) (   0.39,-126.90)  177.37                80
 06/09/2021   15:38:06   (  -0.05,-128.55) (   0.70,-131.82)  373.23                80
 06/10/2021   15:26:22   (  -0.05,-128.55) (   0.03,-128.95)   45.62                80
 06/11/2021   15:17:17   (  -0.05,-128.55) (  -0.64,-126.08)  281.78                80