In the case of exports, demurrage time refers back to the length between a full container moving into a terminal and staying loaded on to a ship. For imports, demurrage time would be the period between a full container remaining discharged through the ship and leaving the terminal. Free Time: https://4-export-credit-agency-fu01098.anchor-blog.com/15262885/5-easy-facts-about-17-hsn-code-meaning-in-gst-billing-described