Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 9 20.  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)
 09/20/2021   06:42:48   (   0.35,-127.93) (   0.47,-127.27)   73.72                80
 09/22/2021   06:30:37   (   0.35,-127.87) (   1.10,-124.32)  403.50                80
 09/22/2021   18:49:13   (  -0.36,-127.80) (  -0.03,-129.48)  189.76                80
 09/24/2021   18:39:41   (  -0.36,-127.74) (  -0.61,-126.51)  139.62                80
 09/25/2021   06:58:26   (   0.37,-127.77) (  -0.45,-131.71)  447.93                80
 09/26/2021   18:27:30   (  -0.35,-127.67) (  -1.25,-123.56)  468.43                80
 09/27/2021   06:46:14   (   0.36,-127.70) (   0.13,-128.74)  119.27                80
 09/29/2021   06:36:42   (   0.36,-127.62) (   0.72,-125.78)  208.74                80
 09/29/2021   18:55:18   (  -0.37,-127.55) (   0.35,-130.94)  385.18                80
 10/01/2021   18:43:06   (  -0.36,-127.47) (  -0.23,-127.97)   57.84                80
 10/03/2021   18:33:35   (  -0.36,-127.38) (  -0.88,-125.02)  269.15                80