Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 9 13.  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)
 09/13/2021   06:36:42   (   0.32,-128.13) (   0.84,-125.81)  264.45                80
 09/13/2021   18:55:18   (  -0.34,-128.06) (   0.24,-130.97)  329.65                80
 09/15/2021   18:43:06   (  -0.34,-128.01) (  -0.32,-128.00)    1.68                80
 09/17/2021   18:33:35   (  -0.33,-127.95) (  -0.95,-125.04)  331.19                80
 09/18/2021   06:52:20   (   0.35,-127.99) (  -0.10,-130.24)  255.13                80
 09/20/2021   06:42:48   (   0.35,-127.94) (   0.47,-127.27)   75.22                80
 09/22/2021   06:30:37   (   0.35,-127.88) (   1.11,-124.32)  405.45                80
 09/22/2021   18:49:13   (  -0.36,-127.81) (  -0.03,-129.48)  189.01                80
 09/24/2021   18:39:41   (  -0.36,-127.75) (  -0.61,-126.51)  140.83                80
 09/25/2021   06:58:26   (   0.37,-127.79) (  -0.44,-131.71)  445.26                80
 09/26/2021   18:27:30   (  -0.35,-127.69) (  -1.25,-123.56)  470.10                80