1CE

1CE, written as 1 CE, denotes the first year of the Common Era in the Gregorian and Julian calendar systems. It immediately follows 1 BCE, and is part of a widely used dating framework that labels years without a year zero. In this system, the sequence runs from 1 BCE to 1 CE.

In historical usage, 1 CE marks the start of the 1st century CE. Dating events from this period relies on ancient sources and later scholarly reconstructions, and many precise dates are approximate due to limited contemporary records and calendar reforms over time.

The BCE/CE notation is the standard in modern historiography and public discourse, though some sources still use the older AD/BC terms. In formal timelines and many databases, the proleptic Gregorian calendar is used, with the year 0001 representing 1 CE for computational purposes.

In broader context, the distinction between BCE/CE and BC/AD reflects a shift toward secular terminology for dating historical events. The concept of 1 CE is primarily a label for a period in the early first century, rather than a specific event.

See also BCE, CE, calendar era, Gregorian calendar, Julian calendar.