Board Thread:Spoilers!/@comment-27060727-20180222230337/@comment-31597971-20180428014920

Well, HH is 2017, Young Henry was still in Storybrooke in 2017. And we know Robin lived in Storybrooke and she's a lot older, so clearly it wasn't supposed to still be 2017 in Storybrooke. The curse sent them back in time - that's why Regina mentioned they couldn't go to Storybrooke for help, it would cause time to be changed as Regina and Henry are still there at this point in time.