Time machine.

I put the strange mechanical parts in the time mahine(the first time it was mentioned) and went to 1830,but thats the only date showing andthe SG is telling me to go to the garden in 153?. How? I am so confused!!

Possible spoiler. please highlight to read

Have you collected the blue crystal? Have you used it on the time device?

Besides - try to use in-game hint system, it helps!