Today, Wednesday, July 9, 2025, isn’t just any other day. Scientists say that today will be the shortest day in recorded history, with Earth completing its rotation about 1.4 milliseconds faster than the usual 24 hours.

This is happening because of complex interactions between the Moon, Earth’s core, and other factors that affect the planet’s rotation speed.

What does this mean for us in Vanuatu?

Vanuatu is 11 hours ahead of Universal Time (UT), which is the standard scientists use to measure Earth’s rotation. Since the “shortest day” is based on UT, it means today in Vanuatu is also experiencing this slightly faster rotation.

To be clear:

• The day will be 1.4 milliseconds shorter over the full 24-hour period.
• You won’t notice it in your daily life.
• It is important for scientists, GPS systems, banking networks, and astronomical calculations.

Why it matters

Although a millisecond seems tiny, Earth’s rotation speed affects how we measure time globally, ensuring the sun stays roughly overhead at noon. If Earth keeps spinning slightly faster, scientists may need to add a “negative leap second” by 2029 to keep our clocks aligned with the planet’s actual rotation.

For now, there’s no need to worry. But it’s fascinating to know that today, our planet is moving a little faster beneath our feet.

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Sources:

• The Guardian
• NY Post