Set Ad Schedule

Sets a campaign's ad schedule (day/hour): serving hours and per-hour bid adjustments. schedule: comma-separated 'DAY HH:MM-HH:MM' blocks ('MONDAY 09:00-18:00, TUESDAY 09:00-18:00'). Minutes must be 00/15/30/45. Days: MONDAY..SUNDAY. A range crossing midnight cannot be a single block; it is two blocks ('SATURDAY 22:00-24:00, SUNDAY 00:00-02:00'). mode='add' (default) adds the blocks alongside the campaign's existing ones; it can only WIDEN a schedule, and Google rejects blocks that overlap existing ones. mode='replace' first DELETES every existing schedule block of the campaign and writes only the ones given here (remove+create in a single request, so the campaign never briefly falls back to 24/7); this is how an existing schedule shrinks or changes shape. get_ad_schedule returns the current schedule.

Bid modifier (percentage, like Microsoft's bid_adjustment): bid_modifier_pct applies to every block, or put it per block as a trailing percentage — 'SATURDAY 22:00-24:00 -50%'. Range -90%..+900%; -100% is not possible — to stop serving in an hour range, leave it OUT of a mode='replace' schedule. Fully automated bidding (tCPA/tROAS/Maximize conversions) ACCEPTS but IGNORES bid modifiers.

Once a schedule exists, the campaign runs ONLY during those hours. confirm=false → dry-run.