Zulu Time is based on the time at the Royal Observatory in Greenwich, England, which is known as the Prime Meridian of the World. Zulu Time is used by the military, aviation, and maritime industries, and by scientists and other professionals who must synchronize their activities across different time zones.
Zulu Time is valuable since it’s an accurate and reliable time standard. If you’re tracking the progress of your imports being shipped by ocean vessel, there is a strong chance that Zulu time is being used.
Unless you happen to already be in Greenwich, chances are your local time is going to be different. This may help you make final arrangements for document filing based on a ship’s estimated time of arrival.
Related articles:

Licensed customs support for importers across a wide range of U.S. entry needs. USA Customs Clearance provides Customs Bonds, Consulting, Customs Brokerage, Manifest Confidentiality, Importer of Record support, and Guides & Resources to help importers prepare for U.S. Customs and Border Protection (CBP) requirements and customs clearance with regulatory compliance, greater clarity, and confidence.
With licensed broker support, transparent service information, and secure checkout, we help importers take the right next step.

We know the importing process and requirements can be confusing, but they don't have to be.
We're here to help.
When purchasing a product from our website, you can feel confident knowing our team can help if you accidentally select the wrong product. We'll guide you through the correct purchase and any applicable refund process.
Important Refund Policy Information
Eligible refunds are subject to a $50 processing fee, which will be deducted from your original purchase amount. Please allow up to 90 days for refunds to be processed, as refunds are handled quarterly by our Accounting Department.
Refunds are available only if you have not yet:
Additional Refund Terms
You have 90 days from the date of purchase to submit your bond application. After 90 days, bond fees are forfeited and are nonrefundable.
All eBook sales are final and nonrefundable.