1000 years is equivalent to one millennium.
A millennium is a period spanning one thousand years. It can also be expressed as:
- 10 centuries
- 100 decades
- Approximately 365,250 days (accounting for leap years)
The term "millennium" derives from the Latin words mille (thousand) and annus (year). Historically and culturally, the passage of a millennium often holds significant weight, marking a major turning point or era. For example, the transition from the 1990s to the 2000s (or the 21st century) was celebrated as the start of a new millennium.