Chris Hemsworth claims he has no idea when he got married.

The 'Rush' star, who has a 17-month-old daughter, India Rose, with Spanish actress Elsa Pataky, has revealed they argue about what date they tied the knot on in Sumba, Indonesia, in December 2010.

The 30-year-old actor told Details magazine: ''Uh, I should know the answer to this. There's a bit of a dispute . . .''

The Australian star's wife gave him a ring engraved with a date but he is convinced they were only legally married a few days later.

He said: ''So yeah, answer about the date of my wedding: somewhere in December.''

Chris is currently filming 'Heart of the Sea' and has three other films in pre-production but he hopes to take some time off soon.

He said: ''I've been working solidly for a couple of years now, to the point where I have to slow down and spend some time with my family.''

But he is worried that his success won't last.

He said: ''You spend so long having your hand up, saying, 'C'mon, c'mon - pick me!' there's a fear of saying no to things. It's bred into you. I get s**t sent to me and I think, 'I should probably just take this.' But now I try to say, 'Hold on - do you even like it?' I do have a little control now. That's the transition - I'm not at the mercy of someone else so much. And that is just as scary as it is liberating.''