Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 9 18.  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)
 09/18/2021   06:52:20   (   0.35,-127.99) (  -0.14,-130.24)  256.03                80
 09/20/2021   06:42:49   (   0.35,-127.93) (   0.50,-127.28)   74.00                80
 09/22/2021   06:30:38   (   0.35,-127.87) (   1.13,-124.32)  403.99                80
 09/22/2021   18:49:12   (  -0.36,-127.81) (   0.00,-129.47)  189.62                80
 09/24/2021   18:39:42   (  -0.36,-127.74) (  -0.64,-126.52)  139.92                80
 09/25/2021   06:58:25   (   0.37,-127.78) (  -0.48,-131.70)  447.18                80
 09/26/2021   18:27:30   (  -0.35,-127.67) (  -1.22,-123.55)  468.90                80
 09/27/2021   06:46:14   (   0.36,-127.70) (   0.16,-128.75)  118.36                80
 09/29/2021   06:36:42   (   0.36,-127.63) (   0.75,-125.78)  209.82                80
 09/29/2021   18:55:18   (  -0.37,-127.56) (   0.33,-130.94)  384.46                80
 10/01/2021   18:43:06   (  -0.36,-127.47) (  -0.26,-127.98)   56.90                80