The last day to order for delivery by each holiday, by shipping method, from our Redmond, WA plant to US addresses. Each date is an estimate from the same calculation a quote uses.
Dates are estimates in UTC, counted in our plant's production days and the carrier's transit days. A quote placed on the day shown says whether the order meets the date. Carrier delays posted after this page was read can move them; a quote reports any that touch your address.
The carrier's peak season runs from Sunday, October 4 through Saturday, January 16; postage on an order shipped then can be higher, and a quote includes it.
The same dates are in the API's calendar (GET /v1/calendar, order_by) and the MCP server's get_calendar tool, and a quote with a delivery date answers whether an order meets it. See the API reference.