1767225600 is a Unix timestamp in seconds. It represents 2026-01-01T00:00:00Z.
The same instant in milliseconds
JavaScript Date expects milliseconds, so the equivalent value is 1767225600000.
const seconds = 1767225600;
const date = new Date(seconds * 1000);
console.log(date.toISOString());
// 2026-01-01T00:00:00.000Z
The common wrong-unit result
Passing 1767225600 directly to new Date() treats it as milliseconds and produces 1970-01-21T10:53:45.600Z. That date is not a parsing mystery; it is a seconds-versus-milliseconds mismatch.
Use it in a range query
A timestamp is useful for a fixture or known event. For a date range, calculate the start and next boundary in the intended timezone, then use a half-open comparison: greater than or equal to the start and less than the next start.
Frequent questions:
- Q: What date is Unix timestamp 1767225600?
- A: 1767225600 in Unix seconds is 2026-01-01T00:00:00.000Z — Thursday, January 1, 2026 at 24:00:00 UTC.
- Q: What is 1767225600 in milliseconds?
- A: 1767225600000 milliseconds is the same instant — the form JavaScript Date and Java Instant expect.
- Q: Why does new Date(1767225600) show 1970?
- A: JavaScript Date takes milliseconds. The seconds value treated as milliseconds points to early 1970. Use new Date(1767225600 * 1000) instead.
- Q: How do I convert 1767225600 in shell?
- A: Linux: date -u -d @1767225600. macOS: date -u -r 1767225600. Both return the UTC date.