Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2020 6 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 06/29/2020   19:00:47   (   0.04,-128.09) (   0.95,-132.37)  487.65                80
 07/01/2020   06:27:21   (  -0.05,-128.13) (   0.79,-124.27)  439.96                80
 07/01/2020   18:48:37   (   0.04,-128.14) (   0.30,-129.42)  145.83                80
 07/03/2020   18:39:06   (   0.04,-128.18) (  -0.30,-126.46)  195.38                80
 07/04/2020   07:00:31   (  -0.03,-128.21) (  -0.77,-131.66)  392.54                80
 07/06/2020   06:48:21   (  -0.03,-128.25) (  -0.12,-128.71)   52.00                80
 07/08/2020   06:33:31   (  -0.03,-128.29) (   0.53,-125.76)  288.39                80
 07/08/2020   18:54:46   (   0.03,-128.28) (   0.61,-130.90)  298.71                80
 07/10/2020   18:45:16   (   0.02,-128.32) (  -0.04,-127.95)   41.70                80
 07/12/2020   18:33:06   (   0.02,-128.36) (  -0.70,-125.00)  381.86                80
 07/13/2020   06:54:30   (  -0.02,-128.39) (  -0.43,-130.19)  205.31                80