Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 12 14.  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) (  -0.02,-137.21)    1.33                80
 12/16/2021   19:10:39   (  -0.03,-137.20) (  -0.68,-134.26)  335.80                80
 12/17/2021   07:32:02   (   0.02,-137.20) (  -0.43,-139.45)  255.41                80
 12/19/2021   07:17:11   (   0.02,-137.18) (   0.19,-136.49)   78.94                80
 12/21/2021   07:04:59   (   0.02,-137.15) (   0.80,-133.53)  412.64                80
 12/21/2021   19:26:13   (  -0.02,-137.15) (   0.32,-138.68)  173.96                80
 12/23/2021   19:16:41   (  -0.02,-137.12) (  -0.30,-135.72)  159.15                80
 12/24/2021   07:38:05   (   0.01,-137.11) (  -0.81,-140.91)  432.39                80
 12/25/2021   19:04:29   (  -0.01,-137.08) (  -0.92,-132.76)  491.77                80
 12/26/2021   07:25:53   (   0.01,-137.07) (  -0.18,-137.95)   99.89                80