Locke and the Losties see the light from the hatch

While walking towards the beach, Locke, Sawyer, Juliet, Miles, Daniel and Charlotte see the light from the Swan Station hatch in the distance. Locke knows when they are because that is the night from season 1 when he was banging on the hatch after Boone fell off the clip in the beachcraft. Locke says they should avoid it and keep moving. Daniel asks Locke if he knows when it is, but Locke just tells them to keep moving.

Locke seems to know that's it's best to avoid his past self. There will be more on his conversation with Sawyer about this in a forthcoming post.