Subtitle Zodiac.2007.720p.bluray.x264.[yts.ag] -

OpenSubtitles: The largest database; look for the "YTS" or "YIFY" tag in the results.

If the subtitles start correctly but drift over time, it may be due to a difference in "Director's Cut" vs. "Theatrical Cut" runtimes. YTS usually distributes the Director's Cut (approx. 162 mins). subtitle Zodiac.2007.720p.BluRay.x264.[YTS.AG]

Since this is a standard YTS release, most major subtitle repositories will have a direct match. Search for the exact filename on these platforms: OpenSubtitles: The largest database; look for the "YTS"

If you'd like, I can help you figure out if you have the or the Theatrical version based on the file size? OpenSubtitles: The largest database

Ensure the subtitle is for 23.976 fps, which is standard for BluRay rips.