Easter 2025 will be celebrated on April 20, but the date isn’t fixed. It is determined using a centuries-old formula tied to ...

These graphics explain why Easter Sunday changes each year based on ancient interpretations of the solar and lunar cycles.

Ancient civilizations around the world had ... Meanwhile, the Sumerians used a lunar calendar, adjusting for the solar cycle through intercalation. These timekeeping systems were very important ...

An image of the Chang'e 6 lander on the lunar surface at the far side of the ... The nearside, covered in ancient deep impacts and volcanic flows, has regions that are rich in thorium, as we ...

Traditional Te Ao Māori farming techniques – the Maramataka lunar calendar – are ideal for regenerative farming.