Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 9 22.  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)
 09/22/2021   06:30:37   (   0.35,-127.86) (   1.08,-124.31)  403.22                80
 09/22/2021   18:49:13   (  -0.36,-127.81) (  -0.00,-129.47)  189.68                80
 09/24/2021   18:39:42   (  -0.36,-127.74) (  -0.64,-126.52)  139.52                80
 09/25/2021   06:58:25   (   0.37,-127.76) (  -0.47,-131.71)  448.51                80
 09/26/2021   18:27:30   (  -0.35,-127.67) (  -1.23,-123.55)  468.13                80
 09/27/2021   06:46:13   (   0.36,-127.69) (   0.11,-128.74)  120.07                80
 09/29/2021   06:36:42   (   0.36,-127.61) (   0.76,-125.78)  207.80                80
 09/29/2021   18:55:17   (  -0.37,-127.55) (   0.37,-130.93)  385.71                80
 10/01/2021   18:43:06   (  -0.36,-127.46) (  -0.28,-127.98)   58.56                80
 10/03/2021   18:33:34   (  -0.36,-127.37) (  -0.87,-125.01)  268.31                80
 10/04/2021   06:52:18   (   0.37,-127.39) (  -0.23,-130.20)  320.01                80