To ensure Christmas delivery in the contiguous U.S., ship by Dec. 17 for USPS Ground Advantage and First-Class Mail. The deadline for most international USPS services has already passed, with Priority ...

Dec. 10 (UPI) --The United States Postal Service on Wednesday issued its holiday operating schedule heading into the new year. Postal officials said next week is the final window to mail holiday gifts ...

NASA has announced when the longest total solar eclipse of the century will occur—and you won’t have to wait long. Here’s what you should know. According to NASA's solar eclipse calendar, the longest ...

With major eclipses, brilliant supermoons, and lineups of five or more planets, 2026 offers something awe-inspiring in every season. Here’s what to watch for. Solar prominences and their associated ...

The first of the holiday season’s shipping deadlines are approaching. Shoppers wanting to get their packages delivered by Christmas Day should note the timelines recommended by FedEx, UPS and the U.S.