NASA has calculated, to the precise second, when Voyager 1 will be exactly one light-day from Earth: 2:16 a.m. on 18 November 2026, at a distance of 16,094,799,096 miles — a number that would have been science fiction when the probe launched in 1977 - Space Daily

NASA has pinned down an unusual milestone for Voyager 1 with remarkable precision: the moment the spacecraft will be exactly one light-day away from Earth. According to the agency, that point arrives at 2:16:07 a.m. PST on Wednesday, 18 November 2026.

At that instant, Voyager 1 will be 16,094,799,096 miles from Earth. In other words, it will be at a distance that light itself takes a full day to travel, turning a vast and abstract measure of space into a specific date and time.

The milestone highlights just how far Voyager 1 has traveled since its 1977 launch. Reaching a one-light-day separation is the kind of scale that once belonged more to science fiction than everyday mission updates, yet NASA has now reduced it to the precise second.

The calculation underscores both the longevity of Voyager 1 and the extraordinary distances involved in deep-space exploration. By attaching a timestamp to this moment, NASA is offering a striking reminder of how far one of humanity’s most famous spacecraft has journeyed from home.