The Buyers shall advise the Sellers by cable, 12 days before the expected loading date, of the estimated laydays, contract number, name of vessel, quantity, to be loaded and shipping agent.

买方应在船只受载期12天前将船名、预计受载日期、装载数量、合同号码、船舶代理人，以电报通知卖方。

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Notification includes the exact shipping date and estimated time of arrival.

通知包括确切的装船日期及预计到达时间。

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Some folks are reporting that they're already receiving shipping notices even though their estimated delivery date was weeks away, so Apple might just be being overly cautious with its estimates.

ENGADGET: iPad 2 shipping estimates now three to four weeks, retail availability hit and miss