IANA time zone name, such as America/New_York. With it, start_date and end_date are calendar days in that zone, and skip_reasons and creative_filter_reasons, which the DSP reports by the hour, cover midnight on the first day to midnight after the last there. sites, devices, creatives, sizes and filter_reasons cover the Pacific days that overlap most of yours: the DSP reports them only per Pacific day. Those are the same dates in the Americas and Europe, and the day before for a zone well east of Pacific (Tokyo's 2026-10-05 reads Pacific 2026-10-04). For a range already under way, Pacific days that would run past the current one shift back, keeping their number, to end on it: just after midnight in Berlin, its today reads the Pacific today. Unlike the performance reads, tz has no earliest start date here.