The answer to "when is the first" depends on the context, which is unclear from the query. However, some common interpretations include:
- The first day of the week, which according to the international standard ISO 8601 is Monday. In many cultures including most of Europe and China, Monday is considered the first day of the week. In other places like the United States, Sunday is often considered the first day of the week due to religious and historical reasons.
- The first day of fall in 2025 is Monday, September 22, 2025, at 2:19 p.m., which marks the autumnal equinox in the Northern Hemisphere.
If the query refers to something else like the first event or first moment of a specific thing, please clarify for a more precise answer.
