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Vietnamese calendar

Lunisolar calendar of Vietnam From Wikipedia, the free encyclopedia

Vietnamese calendar
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The Vietnamese calendar (Vietnamese: âm lịch; chữ Hán: 陰曆) is a lunisolar calendar that is mostly based on the lunisolar Chinese calendar. As Vietnam's official calendar has been the Gregorian calendar since 1954,[1] the Vietnamese calendar is used mainly to observe lunisolar holidays and commemorations, such as Tết Nguyên Đán and Tết Trung Thu.

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A calendar issued for the year Bảo Đại 19 (1944), entitled "Đại Nam Hiệp Kỷ Calendar of Giáp Thân (Wood Monkey) year Bảo Đại 19" (大南保大十九年歲次甲申協紀曆, Đại Nam Bảo Đại thập cửu niên tuế thứ Giáp Thân hiệp kỷ lịch) showing all the national holidays and observations of the Nguyễn dynasty.
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Historical developments

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A calendar used during the Lê dynasty, titled Đại Việt Cảnh Hưng thập cửu niên tuế thứ Mậu Dần Khâm Thụ lịch 大越景興十九年歳次戊寅欽授曆 (1758).

After Vietnam regained independence following the third Chinese domination of Vietnam, the following dynasties established their own calendars based on Chinese prototypes, and every subsequent dynasty had appointed officers to man and create the calendar to be used in the realm.[1] According to the Đại Việt sử lược historical chronicles, the Vietnamese rulers started building astronomical/astrological facilities in the capital Thăng Long (chữ Hán: 昇龍; i.e. modern Hanoi) as early as 1029.[2] Beginning in 1324, the Yuan dynasty introduced the Thụ Thời (Chinese: 授時; pinyin: shòu shí) calendar to the Trần dynasty.[3]

More information Calendar name, Year in use ...

Beginning in 1954, Vietnamese administrative offices officially used the Gregorian calendar, while the civilian populace continued to use a variety of local calendars derived from French, Chinese and Japanese sources, including the Hiệp Kỷ calendar.[1] On 8 August 1967, the North Vietnamese government issued a decree to change Vietnamese standard time from UTC+8 to UTC+7, as well as make the Gregorian calendar the sole official calendar, restricting lunisolar calendar use to holidays and commemorations. Southern Vietnam would later join this change at the end of the Vietnam War in 1975.

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Differences from the Chinese calendar

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The Chinese calendar is based on astronomical observations and is therefore dependent on what is considered the local standard time. North Vietnam switched from UTC+8 to UTC+7 on 8 August 1967, with southern Vietnam doing likewise in 1975 at the end of the Vietnam War. As a result of the shift, North and South Vietnam celebrated Tết 1968 on different days.[5] This effect would see the solstice falling on 21 December in Hanoi, while it was 22 December for Beijing.

As the 11th month of the Chinese calendar must contain the winter solstice, it is not the month from 23 November 1984 to 21 December 1984 as per the Vietnamese calendar, but rather the one from 22 December 1984 to 20 January 1985. The effect of this is that the Vietnamese New Year would fall on 21 January 1985, whereas the Chinese New Year would fall on 20 February 1985, a one-month difference. The two calendars agreed again after a leap month lasting from 21 March to 19 April of that year was inserted into the Vietnamese calendar.

In the Vietnamese zodiac, the cat replaces the Rabbit in the Chinese zodiac. So, a child born in the Chinese year of the Rabbit will be born in the Vietnamese year of the Cat (mẹo/mão). The Vietnamese zodiac uses the same animals as the Chinese zodiac for the remaining 11 years, though the Ox of the Chinese zodiac is usually considered to be a water buffalo (sửu/trâu) in the Vietnamese zodiac.

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Examples

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The title page of the book, Tam thiên tự giải âm, with the date published being listed on the right.

The title page lists the publishing date, "皇朝辛卯年孟秋上浣新刊" (Hoàng triều Tân mão niên mạnh thu thượng hoán tân san) on the right of the title (三千字解音).

More information Text, Meaning ...
  • The date can be translated as "In the Tân Mão (辛卯) year of the imperial dynasty, during the early autumn, a newly published edition [is released]." (1831)
  • Typically other books will denote the era name of the emperors' reign in the publishing date such as the date in book, 千字文解音 Thiên tự văn giải âm, where the date listed is as "成泰庚寅年孟春上浣新刊" (Thành Thái canh dần niên mạnh xuân thượng hoán tân san). It can be translated as "In the Canh Dần (庚寅) year during the reign of Thành Thái, during the early spring, a newly published edition [is released]." (1890).
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The title page of Đại báo phụ mẫu ân trọng kinh 大報父母恩重經, which has the publishing date on the right.

The title page lists the publishing date, "紹治柒年柒月朔日重刊" (Thiệu Trị thất niên thất nguyệt sóc nhật trùng san) on the right of the title (大報父母恩重經).

More information Text, Meaning ...
  • The date can be translated as "On the first day of the seventh month in the seventh year of the Thiệu Trị era, a republished edition [is released]." (11 August 1847)
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See also

References

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