Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 9 17.  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)
 09/17/2021   18:33:35   (  -0.33,-127.95) (  -0.96,-125.04)  331.23                80
 09/18/2021   06:52:19   (   0.35,-127.99) (  -0.16,-130.23)  255.83                80
 09/20/2021   06:42:48   (   0.35,-127.93) (   0.48,-127.28)   74.36                80
 09/22/2021   06:30:37   (   0.35,-127.87) (   1.11,-124.32)  404.49                80
 09/22/2021   18:49:12   (  -0.36,-127.81) (   0.02,-129.47)  189.30                80
 09/24/2021   18:39:41   (  -0.36,-127.75) (  -0.62,-126.51)  140.42                80
 09/25/2021   06:58:26   (   0.37,-127.78) (  -0.44,-131.71)  446.43                80
 09/26/2021   18:27:30   (  -0.35,-127.68) (  -1.26,-123.56)  469.57                80
 09/27/2021   06:46:14   (   0.36,-127.71) (   0.15,-128.75)  117.42                80
 09/29/2021   06:36:42   (   0.36,-127.64) (   0.73,-125.78)  210.91                80
 09/29/2021   18:55:18   (  -0.37,-127.57) (   0.34,-130.94)  383.54                80