This standard specifies the representation of Gregorian calendar dates and times and time intervals. It includes: a) calendar dates represented by year, month and day of the month; b) ordinal dates represented by year and day of the year; c) weekdays represented by year, week number and day of the week; d) time of day based on a 24-hour timekeeping system; e) the difference between local time and Coordinated Universal Time (UTC); f) combinations of dates and times; g) time intervals; h) recurring time intervals. This standard applies to the representation of dates and times involved in information exchange. This standard does not include dates and times represented by words in date and time representation, nor does it include dates and times that are not represented by characters. This standard takes into account leap seconds, which are sometimes inserted at the end of the calendar month to maintain the astronomical accuracy of the calendar day. This standard does not give any special meaning or interpretation to all data represented by this standard representation. Its meaning is determined by the context of application. GB/T 7408-2005 Data and exchange formats Information exchange date and time representation GB/T7408-2005 standard download decompression password: www.bzxz.net
This standard specifies the representation of Gregorian calendar date and time and time interval. It includes: a) calendar date represented by year, month and day of the month; b) ordinal date represented by year and day of the year; c) weekday represented by year, week number and day of the week; d) time of day based on 24-hour timekeeping system; e) time difference between local time and coordinated universal time (UTC); f) combination of date and time; g) time interval; h) cyclic time interval. This standard applies to the date and time representation involved in information exchange. This standard does not include date and time represented by text in date and time representation, nor does it include date and time not represented by characters. This standard takes into account leap seconds, which are sometimes inserted at the end of the calendar month to maintain the astronomical accuracy of the calendar day. This standard does not give any special meaning or interpretation to any data expressed in this standard. Its meaning is determined by the context of application.

ICS 01. 140. 3C
National Standard of the People's Republic of China
GB/T 7408—2005/IS0 8601:2000 Recommended by GB/T74081994
Data elements and interchange formats
Information interchange
Date and time representation
times(IS08501:2000,IDT3
2005-03-28 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China
2005-10-01 Implementation
GB/T74DB--2005/1SO8501,2000
Normative references
3 Terms and definitions
Expression
Attachment A (Informative Appendix) Examples
A.1 Date (see Table A.1)
A2 Time (Table A2)
A,3 Combination of day system and time of day (see Table A.3)A 4 Time interval between two (see Table A, 4)
A.: Cycle time interval (see A.5)
CH/T7408-2005/1S08601.20C0
This standard is equivalent to the international standard 1S) 8601C sensitive data display and exchange format
, information exchange date and time representation
(English version), recommended (/T139-14 data element and conversion format information exchange period and busy time in the method
This standard is different from B708-1994 scanning machine in the main changes: one increase in the date and time access method system ( (This edition): Improve the 19 examples of the month and time of the shooting parameters in this edition (1..2, 5.3.5.4); - Increase the time and remove the ring time to indicate the method (this edition of the public section, 5.6) This standard is for reference only: This standard is mainly proposed by the China Institute of Standardization and Construction and is also under the jurisdiction of the National Standardization Technical Committee. This standard is mainly initiated by: Liu Pangsong, the editor of this standard, 1 Scope
Data elements and exchange formats
GB/T 7403—2005/ISO 8601:2000 Information interchange
1 Representation of dates and times
This International Standard specifies the representation of dates and times in the Gregorian calendar and time intervals. It includes: a) dates represented by year, month, and month only; c) dates represented by year and year number; d) times represented by year, day of the week, and day of the week; g) time difference between the current time and Coordinated Universal Time (T); combinations of date and time; g) time intervals between dates; tt||; tt||; This International Standard applies to the representation of dates and times in information interchange. This standard does not include dates and times that are not expressed in English. This standard specifically considers idle seconds, which are inserted into the time as much as possible to maintain astronomical accuracy. For all data elements expressed in this notation, this standard does not give any special meaning or interpretation, and their meaning should be determined by the context.
2 Normative references
The following documents are incorporated by reference in this standard. All the documents that are used in this standard are not subject to this standard. However, all the contents or versions of the documents that are not included in the standard are not applicable to this standard. However, the parties who have adopted this standard are encouraged to study and use the latest version of this document. For all dated referenced documents, the latest edition shall apply to the referenced documents. GB 311-19934 General rules for quantities and units F302.1—1993 Units of space and time quantities GB/T 1S88935 Information technology - Abbreviations (IEC 6050/1FC646:1SS1) 1:R recommended standard TF.60-E Standard frequency and time signal transmission ITU-R recommended standard TF.6E6 Dictionary
3 Terms and definitions
Coordinated Universal Time Courliamentary Linear Time (UTC) is the basis for the development of various standard time scales and time signal transmission systems by the International Earth Rotation Service (TERS).
Note 1: This standard recommends that the IF format TLR also specifies the new IL: fire core when it is used (see 5.3.3).
Note 2: The industry is often incorrectly referred to as Greenwich Mean Time (GMP). Note 3: For information on the format, see the following website:
Guokang Xiaoxinlianjie Network. http://www.itu.n.?hou.e/inaex.hem.CB/T 7408—2005/ISO 8601;2000e.i. Quality Product Network Certification, p./tn.
International Dragon Ball Service Website: h/wuw.icrs.cm3.2
Datedate
In particular, the data element that indicates the calendar year, month, calendar period, calendar day or day of the year is correct. 3.3
Calendar date
ealrndar 3.4
sequential date
ondinoldote
the main calendar year and its sequence in the calendar year. 3.E
type date
meekdate
the calendar year of the common calendar, the three calendar dates and their sequence in the month and week as the identification of the specific calendar day
day (day: lny
21 hours time unit:
calendar daycalendar
from_ 0000 starts and ends at [23] (the time interval is equivalent to the start of the next F, a typical time length is 24.
sweat 1: the market is often reduced,
note: the writing period of the day is 34 hours. It is not based on the one-year case that the earth's rotation financial determination pain person or interruption of the transfer of local power or department to change the local time, and may use other time questions. 3.B
time length drntian
time teaching basis! "long suffering\".
basic format basic:torma1
must be wrong to require the minimum necessary components of the expression format. 3.13
extended format erlend focmat
Now there is a wide range of formats for the two-character format, 3,11
Gregorian calendar Gregoriancakendar
Now the business is chasing the legal system, the card appears in 15 years, the year it represents is closer to the tropical year than the An calendar. Let 1: The result of the An case is biased, the public is in the middle, one ~ Gregorian calendar or the other is the same, each is divided into 8 consecutive months, Note 2, this is far from the standard: the full calendar: auction 4.3.3.1 reversed quality system, 3.12
60 minutes time single low, month fixed text see G63132.1. 3
local time local The local clock time of the state is determined by the relevant authority (national, local) in charge of the time zone. The time difference depends on the time zone - it can also be different at the end of the year, and the time difference is different. The time difference is GB3103.1.3. 15th of the month, 28th of the month, 9.3 seconds of the year. The time difference can be used in different units of 3 degrees Celsius, 3.16
monthcahumiarnwnth
calendar month
divides a grade into 12 consecutive periods of time, called 2 calendar months, each of which has a specific name and a designated number.
1: In the public, the order of the month names and the number of days they contain is as follows; January (3, 26 days in a year), March (2), May (3, July (31), August (3), October (3, 31 days in a month (
Pure 2: Sun! Di is also a month
Time period (time interval) periuduftimectime-iatersnl: The time period between two times.
Note: The time system also refers to the period.
recorring tdme-Imlerval
sick ring time interval diagram
: A series of continuous and same-week time intervals. 3. 19
counplele
Complete representation
includes all the relevant drug and time elements, such as the day and year representation by using a 4-digit half-number representation.
Decimal representation is represented by adding a decimal to the lowest integer in the representation. 3.21
Expanded representationexpanded eprestatlon[C9] Extension of the notation of the month in the calendar year outside the 3999 specification. 3.22
Short notation trntedepsula
A kind of abbreviation that omits the leftmost component of the expression. Note 1 to Figure 4.6
Note 2: If the number of digits is zero, the time length is obtained by using the hour as the unit to obtain the required length. 3.23
Reduced precision notation
represenationwilbreducedprrisiunA kind of reduced precision notation that omits the lower-order components of the expression. GB/7:7408—2005, ISO8601.20003.24
Secondssecond
International SystemA basic unit of time measurement in H3102.1, 3.25
[lenpsecend
] To ensure close correspondence with the time scale based on the rotation of the Earth, a second is deliberately adjusted to use a human second as the correct second, and the omitted second is called a celestial second: (see [TT:RRec.TF.465) Note: The above is inserted between 23:5%;597. That is, 21.L93301:7. and is expressed as 25:55:h07. The single second is obtained by consulting 22:9:1:17., and is usually on the 6th or 1st of the month, and is a time unit that can be set at 1 or 030 R.
time tine-point
long decay time is interpreted as Newton.
week
7-inch unit of time.
calendar week
calendar week
a 7-hour period starting on Monday and marked with its serial number in the month of the year. Month is the period of time that is usually divided by 1.
year
a unit of time equal to 3 calendar years, 3. 30
calendar year ... 4 Basic principles
4.1. Basic principles
Four concepts are defined in this standard:
Time interval: The time instant with length considered as zero. The moments are determined by their positions in the time coordinate system (and the time distance from the seasonal point).
GR/T740B--2005/1SO$601:2Q00
Time interval: The time interval between two moments. These times are marked as "and" and "and" need to be specified by two moments: the time interval between the two moments is specified by a common time measurement and the time distance between the two moments, or there is no such time The time distance between moments is specified.
Cycle time interval: - The time interval of a series of consecutive identical cycles. The cycle time interval is a time interval and the number of cycles specified.
.Synchronous: The amount of time ("length\). The period is a physical unit of time in the International System of Units (SI) (S). Its definition can be found in GB3102,1.
The exact or approximate time and time can be marked by using the unique, especially the same, method of indicating the date and time in the previous period. This standard specifies a standard for expressing the period, the minimum time, the time interval and the cycle time interval. Adding or removing some time elements (such as seconds) can adjust the required degree of change. 4.2 Features common to single and combined representations The following time is represented in descending order from left to right: Time point 1
Month period:
Time period 2:
Ring time period:
The above length is in the form of
4.3 Time units and calendar system
4.3.1 Time units
The periods in this standard are represented by one or more of the following units: Type, International System of Units66C1:2000
In the Gregorian calendar, each year is divided into 12 consecutive calendar months, as shown in Table 1. Table "Calendar month
Day milk effect
Day of week
Oral medicine
This day's medicine
32---56
121~151
152--11
143-..212
213~-213
724--274
774-·362
335-565
Year-round oral medicine
0: --1
t- --5-
122--152
1:3~12
h--- ?
212--2-4
r5~·25:
4C5~H3h
335--266
In addition to the calendar systems described in 1:.2.:, there is also a series of calendar systems that are based on a continuous calendar week: each week has H days, as shown in the table. Table 2
Number of harvest days in the period
Calendar day
Day Western day name
Return period one
Return period one
Last period entry
Last period R
The most reference point in 23 years is set as the week||tt| |The calendar year is marked with the number of days in the calendar year. According to the general rule, the first calendar day in a year includes the fourth day of the calendar year, and the day after the last calendar day of the calendar year is the day of the tenth day of the calendar year. Note 2: When a calendar year may include two days in a calendar year, the last calendar day of the next calendar year may include the day of the next calendar year.
Note 3: The time indicated by the calendar day of the week is different every year. For example: January 1, 695, the 7th day of the second day of the calendar year, the day of the second week of the year 121. 1, determine the provincial 1 calendar listed in the regulations
ten people's pressure period also includes! The dates on the 4th of the month are equal, G
4.3.2.3 Monthly dates
Each date can be represented by a calendar date. The date must be marked in the calendar. The calendar date is marked with the following three parts: its calendar year
its day of the month:
its sequential number in the calendar month. The date is marked with the following three parts: its calendar year:
its sequential number in the calendar year:
The calendar year of the year:
The calendar week number of the calendar week of the year: its sequential number in the calendar month.
4.4 Characters used in the representation
GB/T 7408—2005/1SO 8601.2000 The notation specified in this standard adopts the numbers, letters, and special characters specified in B. The usage of these characters is as follows: 1.
Method: Where capital letters are not used, lowercase letters may be used. 2. In the case of a period and time, the notation cannot use the same characters.
4.5 Use of separators
When necessary, the following characters may be used as separators: [ (hyphen)
"Used to distinguish time elements "year" and "day" and "week", "year" and "day", "month" and "day", and "week" and \H\.
"Hyphens may be used to indicate the components of the day [: (day number) 】——Used to separate time elements such as "hours\and\minutes\" and "minutes\and\seconds" [(slash)]——Used to separate two components in the representation of time intervals or time intervals. Factory (slash)——Used to separate two time components in the representation of cyclic intervals and cyclic intervals. 2: Non-standard representations also use decimal fractions. 4.6 Short representation
When the presence of the high-order component is implied, it may not be omitted according to the agreement between the parties. To avoid confusion, a hyphen is often added at the beginning of an omitted fraction. The prefix may be omitted when these notations are not mixed with other notations. The truncated notation shall only be used when the omitted component values ​​are unambiguous in all communications: The following are some of the requirements for the use of the truncated notation: When the truncated notation is used, provisions shall be made to prevent the truncated notation from being inconsistent with other date and time notations used in practice.
4.7 Extended notation
According to the agreement between the parties to the information exchange, the components of the month and year are allowed to be extended: If not extended, calendar years are identified by a maximum of one digit. This method can be used to refer to dates and times in calendar years other than those supported by the full agricultural method, i.e., starting before 1999 or ending after 1999, when the extended method is used, provisions are made to prevent the extended method from being mixed with other dates and times used in actual applications. 4.8 Leading zero In the specified method, each month has a specified length. Leading zero can be used as required. CB/T 7408--2005/IS(86G1,20004.9 Agreement between the parties. This standard recognizes some of the expressions! It can be used according to the agreement between the two parties to the information exchange. The industry should ensure that other representations are used to represent the disease. If the representation of this pool cannot be clearly distinguished from the agreed representation, 5 Representation
5.1 Explanation
5.1.1 Characters used to replace numbers
The numbers used to represent time elements\year\: [the number used to represent the time element "year", [] the number used to represent the time "day"; [] the number used to represent the time point "interval", [! The number used to represent the time "hour" [m]] the number used to represent the time element "minute", [a]
The number used to represent the time element "minute": [represents a positive or negative value;
two] and the record group, if it is necessary to represent a positive value or a negative value, it represents a sign such as [-; if it is necessary to represent a negative value, it represents a negative value.
In addition, the following shall apply:
When a number is represented and any digit is underlined, it indicates zero or more digits of the corresponding time element: its digits are changed in both directions,
5.1.2 Special features used by identifiers
[P] Time identifier, added before the data element representing a given period of a certain time interval, IR
Circular time identifier, added before the data element representing a given time length of a time interval in a circular time interval: If there is no time length data element, it is added before the entire expression, LT time identifier.
When an expression such as a day or a month is expressed, it is used to mark the beginning of the local time representation. In the combination expression of hours and minutes, it is used to mark the beginning of the time representation of the time unit. In the period expression, it is used to mark the beginning of the time unit representation of hours, minutes and minutes. Two related symbols must be added before the data of the period number representing the calendar year: [In this case, the data is directly queried after the effective data element (without interval). The time-related representation method 5.5.3.1> is used to represent the user. When necessary, the following will also be used as the various parts of the representation method; _Y][M][W_[][T1][M [S_, where [M_ can represent either \H\, \minute\, or both. 5.2 Date
For the sake of comparison, in all the following examples of period representation, April 12, 1085 is used as an example. 5.2.1 Calendar date
Calendar period representation:
The day (the day of the month) is represented by a digit. The first day of any period is represented by 1, and the subsequent days are numbered in ascending order,
" Month is represented by two digits, January 1! or 2000, and the following months are numbered in ascending order. Year is generally represented by four digits between 0000 and 99. If the year is represented by a value between 0000 and 1582, the information exchange should be in agreement with the parties. 5.2..1 Complete representation
When the actual representation indicates that only the date is required to be represented, the complete representation should be an eight-bit character representation of the chaotic effect Ning number system 8
GR/T 7408-2005/IS0 8601:2000, which represents a calendar,[MM] indicates the number of the calendar year and the calendar month, and indicates the ordinal number of the calendar item in the day.
Basic format: YYYYMMDD
Extended format: YYYYMMLDL
5.2.1.2 Reduced precision representation
Example 19850-12
Example 1995012
If, in some specific applications, a lower precision representation than the full representation specified in 5.2.1.1 is used, when expressing a period of a month or more, one, four, or six digits may be omitted from the rightmost position, and the resulting expression may represent the month, but not the century. When _DD] is omitted, a separator shall be inserted between YYYY and [MM7, but the separator shall not be used in other reduced precision representations. , a specific month
Basic format: YYYY·MM
Expanded format: large
b) A specific year
Basic format: YYYY
Extended format: none
) A specific century
Basic format: YY
Extended format, working
5.2.1.3 Shortened representation
Example 198-0
Example 1985
Minutes: 3
According to the agreement, if the truncated representation is used, the basic format should comply with the following. In each of the following notations, hyphens indicating omissions should be used as reference.
) Default century specific date:
Basic format: YYMM
Extended format: YY-MM-TD
b) Omitted century specific year and month wwW.bzxz.Net
Basic format: YYMM
Extended format: -YY-MIM
) Default century specific year
Basic format: -YY
Extended format: YY
d) Default year specific day
Basic format: -YY
Extended format: YY-MM-TD
t||Basic format --MMED
Extended format:--MM-DD
E Special word in year
Basic format: MM
Extended format: None
Default special word in month
Base station--->E
Extended format: Especially
Example 830412
185-(04-12
-85-U4
Use: Section 5.2.1.3 gives the meaning of alternative representation and reduced efficiency representation. 5.2.1.4, extended representation
--0212
--0--12
According to the agreement, if the month is adopted, the extended representation method: the basic format shall comply with the following provisions. In the following example, the standard time element year is expanded by two digits.
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