Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 1 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)
 01/18/2021   18:45:32   (   0.04,-127.98) (   0.03,-127.90)    9.29                80
 01/20/2021   18:33:19   (   0.05,-127.93) (  -0.56,-124.93)  340.68                80
 01/21/2021   06:52:04   (  -0.01,-127.89) (  -0.47,-130.14)  254.96                80
 01/23/2021   06:42:31   (  -0.01,-127.84) (   0.13,-127.17)   75.70                80
 01/25/2021   06:30:18   (  -0.02,-127.78) (   0.73,-124.21)  405.83                80
 01/25/2021   18:48:53   (  -0.02,-127.79) (   0.32,-129.37)  179.80                80
 01/27/2021   18:39:20   (  -0.02,-127.72) (  -0.28,-126.41)  149.40                80
 01/28/2021   06:58:04   (   0.06,-127.67) (  -0.81,-131.60)  447.43                80
 01/29/2021   18:27:08   (  -0.01,-127.65) (  -0.89,-123.44)  478.27                80
 01/30/2021   06:45:51   (   0.05,-127.60) (  -0.20,-128.64)  118.57                80