What unit does steam's api use in playtime_forever?

[Hiccup]

I tried using an epoch converter, but the result was very inaccurate. Any help is appreciated

[Ettanin]

https://developer.valvesoftware.com/wiki/Steam_Web_API#GetOwnedGames_.28v0001.29

playtime_forever The total number of minutes played "on record", since Steam began tracking total playtime in early 2009.

It's an absolute time in minutes, not relative to any kind of epoch start. Playtime before early 2009 is not tracked.

[Hiccup]

Thank you man

[Kargor]

Yeah, rtime_last_played is the one item that gives a point in time, and thus needs a point of origin. 99% of the cases, steam uses the standard Unix epoch for this.
Durations (playtime_2weeks, playtime_forever, playtime_windows_forever, playtime_mac_forever, playtime_linux_forever) can be used directly.