In Google Trends tooling, gtrends old_2 5 almost certainly refers to a time span parameter meaning “from 2 to 5 years ago,” usually in the context of requesting older historical data at coarser granularity (often weekly or monthly instead of daily).

What “gtrends” is

  • gtrends / gtrendsR are libraries that query Google Trends programmatically and return interest-over-time data (normalized 0–100).
  • They let you specify a time window like “today 12-m” (last 12 months), “today+5-y” (last 5 years), or custom date ranges.

How “old_2 5” fits in

Different wrappers and packages add their own helper keywords on top of Google’s native ones. In many forum and code contexts:

  • old_* or old_2 5 is used as a shorthand for “older data between year offsets 2 and 5” (i.e., 2–5 years before today).
  • That block of older data is usually where Google Trends automatically switches from daily to weekly or monthly resolution, because anything older than about 5 years is by default aggregated.

So, if you see gtrends old_2 5 in someone’s script or a forum snippet, they are almost certainly:

Requesting Google Trends data for a term, for the window from 2 to 5 years ago, using a helper preset that packages that time range.

Quick concrete example

Think of “today” as early 2026:

  • “2 years ago” ≈ starting sometime in 2024.
  • “5 years ago” ≈ back to around 2021.

A helper like old_2 5 would build a query roughly equivalent to a custom date range covering 2021–2024, then pull that Trends data at the granularity Google allows for that older period.

If you can share the exact code snippet or package name where old_2 5 appears, I can map it to the precise date math and behavior used in that specific library.