Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 1 20.  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)
 01/20/2021   18:33:21   (   0.05,-127.93) (  -0.62,-124.95)  340.11                80
 01/21/2021   06:52:05   (  -0.01,-127.89) (  -0.50,-130.14)  255.88                80
 01/23/2021   06:42:34   (  -0.01,-127.84) (   0.15,-127.19)   74.12                80
 01/25/2021   06:30:22   (  -0.02,-127.77) (   0.74,-124.23)  403.51                80
 01/25/2021   18:48:58   (  -0.02,-127.79) (   0.33,-129.39)  182.14                80
 01/27/2021   18:39:26   (  -0.02,-127.72) (  -0.26,-126.43)  146.41                80
 01/28/2021   06:58:10   (   0.06,-127.66) (  -0.79,-131.63)  450.76                80
 01/29/2021   18:27:15   (  -0.01,-127.64) (  -0.92,-123.48)  474.57                80
 01/30/2021   06:45:58   (   0.05,-127.59) (  -0.19,-128.67)  122.59                80
 02/01/2021   06:36:26   (   0.04,-127.51) (   0.41,-125.70)  205.16                80
 02/01/2021   18:55:02   (  -0.08,-127.53) (   0.66,-130.87)  380.36                80