There are no recorded events this year. See an overview of when world history happened.
The year 4991 BC was a leap year starting on a Monday, just like 5093 BC, 5089 BC, 5085 BC, 5081 BC, 5077 BC, 5073 BC, 5069 BC, 5065 BC, 5061 BC, 5057 BC, 5053 BC, 5049 BC, 5045 BC, 5041 BC, 5037 BC, 5033 BC, 5029 BC, 5025 BC, 5021 BC, 5017 BC, 5013 BC, 5009 BC, 5005 BC, 4997 BC in the century before it and 4989 BC, 4985 BC, 4981 BC, 4977 BC, 4973 BC, 4969 BC, 4965 BC, 4961 BC, 4957 BC, 4953 BC, 4949 BC, 4945 BC, 4941 BC, 4937 BC, 4933 BC, 4929 BC, 4925 BC, 4921 BC, 4917 BC, 4913 BC, 4909 BC, 4905 BC, 4897 BC, 4893 BC in the next.
The coloured days highlight
births
,
deaths
,
political
,
scientific
,
artistic
and
other
historical milestones, and recurring events such as anniversaries and
holidays
.
The new
,
waxing
,
full
and
waning
icons indicate the phases of the moon and appear only for dates in the Gregorian calendar, i.e. after 14 October 1582. The Chinese calendar is available only from 1645 to 2644, the first millenium since the last reform. The coloured columns mark the Sundays, the last day of the week per standard ISO-8601.
The normal calendar page for the current /year?2013 contains an introduction to the intriguing history of the year as we know it. The Calendar Converter has more detail. The so called Perpetual Calendar uses a trick from before the age of computers to find the weekday for any Gregorian date. Also see an overview of all historical events in the last six thousand years.