system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] When Thor says he's 1500 years old, who's years is he talking about

Presumably not Earth's? Is there a standardised year measurement?
gpt
Thor is translating everything to English, including our time measurements.  

Yes, Thor son of Odin is over 1500 years old.

I highly recommend this Thor Odinson (Earth-14412) , to see exactly how old Thor will be in the future.