ISO 8601 Date and Time Format Standard

According to [Wikipedia][iso8601-wiki]:

ISO 8601 is an international standard covering the worldwide exchange and communication of date and time-related data. It is maintained by the Geneva-based International Organization for Standardization (ISO) and was first published in 1988, with updates in 1991, 2000, 2004, and 2019, and an amendment in 2022.

To put it simply, the format is YYYY-MM-DDTHH:MM:SSZ. Where:

• YYYY is the year
• MM is the month
• DD is the day
• HH is the hour
• MM is the minute
• SS is the second
  • SS can be a decimal number so SS.SSS is also valid
• Z is the timezone offset
  • Z is UTC
  • +HH:MM is a positive offset from UTC
  • -HH:MM is a negative offset from UTC
  • So +01:00 is one hour ahead of UTC, and is also Central European Time (CET)

Partial Dates

The standard also allows for partial dates, such as YYYY-MM or YYYY. Basically, any omitted part is assumed to be the lowest possible value for that part. So omitting the seconds part of the time, YYYY-MM-DDTHH:MMZ is valid, But omitting the year, --MM-DDTHH:MMZ is not.

References

Web Links

• [ISO 8601 (from Wikipedia, the free encyclopedia)][ios8601-wiki]

Note Links