YouTube Analytics: Day dimension aggregated by which timezone?

Question

For YouTube Analytics API, there is a "day" dimension that can be used to break down metrics by day.

My question is

• What timezone is used in order to aggregate data into "day" buckets? The user's timezone or some fixed timezone like PST.
• Is DST handled properly with these daily aggregations?

Answer 1

YouTube Analytics (and the API) uses the Pacific time zone (PDT/PST) for all reports, regardless of anything about the channel or the user running the report.

It does handle daylight savings time as you'd expect.