Table 1.
| Type | Extended/Modified ISO 8601 representation |
Natural language example | |
|---|---|---|---|
| Abstract | Example | ||
|
1. ‘absolute’ time:
| |||
| tick | !T | !2001-03-30T16 (or e.g. !2001-03-30T16:00:00, which is equivalent) |
The new weekend fare applies from Friday, March 30th, 2001, 4 PM. |
| granule | [T) | [2001-03-30) | The ticket is valid on March 30th, 2001. |
| tixel | /[T) | /[2000-02-03T17) | (not applicable) |
| (granule) instant | T | 1998-11 | She went to hospital in November 1998. |
| tixel instant | /T | /2000-02-03T17 | She was re-admitted on February 3rd, 2000 at 5 PM. |
| granule sequence | [!T1 - !T2) | [!2001-01-03 - !2001-01-06) |
A 3-day mourning has been declared for January 3rd, 4th and 5th, 2001. |
| tixel sequence | /[!T1 - !T2) | /[!2000-02-03T16 - !2000-02-03T19) |
(not applicable) |
| granule-sequence instant |
[!T1 : !T2) | [!1998-11 : !1999-02) | He was last seen in the 3-month interval starting with November 1998. |
| (granule) instants interval |
[T1 - T2) | [1998-07 - 1998-11) | She stayed with us from (her birthday in) July to (her marriage in) November 1998. |
| interval instant | e.g. [T1 : T2) | [1998-07 : 1998-11) | She bought her car between (her birthday in) July and (her marriage in) November 1998. |
| set of (granule) instants | {T1, T2} | {1998-07, 1998-11} | I saw her (at her birthday) in July and (at her marriage) in November 1998. |
|
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|
2. durations:
| |||
| tick duration | P!T | P!T01 | The ticket is valid for one hour. |
| (granule) instant duration | PT | P0078 | He is 78 years old. |
| tixel instant duration | P/T | P/0000-03 | She stayed for 3 months. |
| tixel-sequence instant duration |
P/[!T1 : !T2) | P/[!0000-00-08 : !0000-00-12) |
The symptoms may last 8 to 12 days. |
|
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|
3. ‘relative’ time:
| |||
| right-constrained instant | e.g. [: T) | [: 1998-11) | She bought her car before (her marriage in) November 1998. |
| (granule) instant duration anchored on tick |
!T1+PT2 | !2001+P0000-04 (equivalent to 2001-05) |
It was in the fifth month of the year 2001. |
| tixel instant duration anchored on tick |
!T1+P/T2 | !2001+P/0000-05 (equivalent to /2001-06) |
It was 5 months after the start of the year 2001. |
| tixel instant duration anchored on (granule) instant |
T1+P/T2 | 2000-12-25+P/0000-03 | Maria died 3 months after I saw her last on Christmas Day 2000. |
|
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|
4. examples of more complex timestamps:
| |||
| tixel instant duration contained in granule |
P/T1@[T2) | P/0000-00-06@[2000-04) | Six days in April 2000. |
| set of (granule) instants intervals |
{[T1 - T2), [T3 - T4)} |
{[1998-11 - 1999-03), [2001-04-05 - 2001-04-12)} |
I was in Paris from November 1998 to March 1999 and from the 5th to the 12th of April 2001. |