Block 226012 occurred before 226011 according to blockchain.info

[potato5491]

http://blockchain.info/block-height/226011 2013-03-15 15:09:06
http://blockchain.info/block-height/226012 2013-03-15 15:05:19

That can't be right. Each block needs to use the has of the previous block, so 226012 must have been generated after 226011.
I am guessing the answer is the way blockchain.info collects the timestamp data. Are the values reported the time at which the blockchain.info node received the block?
Is there a more reliable way of finding the time at which a block was generated?

[lucif]

Time has different dimension in chain. It measured in blocks - not seconds. Timestamp is just approximate value. Miner of block #1 can have different timeshift from miner of block #2. And they put each own Timestamp in block. Network allows some diff.

[potato5491]

And they put each own Timestamp in block.

Ah I see. So this is presumably the time reported on blockchain.info

Thanks!