Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 9 19.  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) (   0.46,-127.27)   73.90                80
 09/22/2021   06:30:37   (   0.35,-127.87) (   1.10,-124.32)  403.70                80
 09/22/2021   18:49:13   (  -0.36,-127.80) (  -0.02,-129.48)  189.83                80
 09/24/2021   18:39:41   (  -0.36,-127.74) (  -0.60,-126.51)  139.60                80
 09/25/2021   06:58:26   (   0.37,-127.77) (  -0.46,-131.71)  447.63                80
 09/26/2021   18:27:30   (  -0.35,-127.67) (  -1.24,-123.55)  468.44                80
 09/27/2021   06:46:14   (   0.36,-127.70) (   0.12,-128.74)  118.94                80
 09/29/2021   06:36:43   (   0.36,-127.62) (   0.77,-125.79)  209.13                80
 09/29/2021   18:55:18   (  -0.37,-127.55) (   0.37,-130.93)  385.10                80
 10/01/2021   18:43:07   (  -0.36,-127.47) (  -0.28,-127.98)   57.73                80