Over 12,600 people celebrate their birthday once in four years, meaning on February 29th , every leap year. Most of them are living in Bucharest.
According to the statistics provided by the Interior Ministry on Monday, 12,622 Romanians were born in a leap year, which means that they are celebrating today, as in 2016 February has 29 days.
6,412 are women and 6,210 are men. Most of them are born in Bucharest (1,142). There are 533 people celebrating their birthday on February 29 who are born in Iași
A leap year (also known as an intercalary year or a bissextile year) is a year containing one additional day (or, in the case of lunisolar calendars, a month) added to keep the calendar year synchronized with the astronomical or seasonal year.
Because seasons and astronomical events do not repeat in a whole number of days, calendars that have the same number of days in each year drift over time with respect to the event that the year is supposed to track. By inserting an additional day or month into the year, the drift can be corrected.
For example, in the Gregorian calendar, each leap year has 366 days instead of the usual 365, by extending February to 29 days rather than the common 28. Similarly, in the lunisolar Hebrew calendar, Adar Aleph, a 13th lunar month, is added seven times every 19 years to the twelve lunar months in its common years to keep its calendar year from drifting through the seasons.
In the Baha’i Calendar, a leap day is added when needed to ensure that the following year begins on the vernal equinox.