Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 12 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 12/14/2021   19:22:50   (  -0.03,-137.21) (  -0.01,-137.21)    1.57                80
 12/16/2021   19:10:39   (  -0.03,-137.20) (  -0.68,-134.26)  335.87                80
 12/17/2021   07:32:02   (   0.02,-137.20) (  -0.43,-139.45)  255.19                80
 12/19/2021   07:17:11   (   0.02,-137.18) (   0.18,-136.49)   79.26                80
 12/21/2021   07:04:59   (   0.02,-137.16) (   0.80,-133.52)  413.06                80
 12/21/2021   19:26:13   (  -0.02,-137.15) (   0.33,-138.68)  173.65                80
 12/23/2021   19:16:41   (  -0.01,-137.12) (  -0.29,-135.71)  159.58                80
 12/24/2021   07:38:05   (   0.01,-137.11) (  -0.81,-140.91)  431.84                80
 12/25/2021   19:04:29   (  -0.01,-137.09) (  -0.91,-132.75)  492.28                80
 12/26/2021   07:25:53   (   0.01,-137.08) (  -0.19,-137.95)   99.26                80