# This webpage is part of https://www.janzuidhoek.net and concerns the Coordinated
Universal Time.

** **

## Coordinated Universal Time is the
time

## which
has passed up to now since the beginning

## 1‑1‑1, 00:00:00

## of
our (Christian) era.

**This implies that the second turn of millenium was [1**‑**1**‑**2001; 00:00:00],
exactly one second after [31**‑**12**‑**2000; 23:59:59]. As a consequence, the
first day of the third millennium was 1**‑**1**‑**2001.**

**Nobody knows when Jesus was born. Nevertheless, the first year 1 of
the Christian era was exactly laid down by the learned Scythian monk Dionysius
Exiguus in AD 525 (see section ‘The classical Alexandrian 19-year lunar
cycle’).**

**Keep in mind that in the framework of our era Thursday 4**‑**10**‑**1582 was the very
last calendar day of the (proleptic) Julian calendar, and that that Thursday
was immediately followed by Friday 15**‑**10**‑**1582 being the very
first calendar day of the Gregorian calendar. Thus the year 1582 is the only
calendar year of our era which had a number of days which is not 365 or 366 (as
a matter of fact, it had only 355 days). Between the first year 1 and the
present year 2019 of our era there were only four calendar years of our
era whose year number was divisible by 4 but whose number of days was
nevertheless 365, namely the years 4, 1700, 1800, and 1900.**

**The difference UT **-** UTC between the Universal Time
(UT) and the Coordinated Universal Time UTC fluctuates between **-**1 and 1 seconds.**