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Dates and times.


Past, present and future.

The present is default, he has no date.
The past is a date less than the current date.
The future is a date which is superior to the current date.

A future date can become a event.
A date or an approximate period is possible.


Event.


event
Only for the places.

A future date can become a event.
A date with at least the year, month and day specified in the future.
In content management, a rubric is displayed for transforming this content into event.

You can give the possibility to members to indicate their participation in your event.

The event will be visible and accessible while respecting the vision system, public, private and member.


Historical time.


historic
The year is the minimum mandatory for a historical date.

The date before Jésus-Christ is specified with the negative sign on the year.

Example :

-52 is equivalent to 52 before Jésus-Christ.

It is possible to use the metric prefix.

Metric prefix.

The metric prefix allows simplify the handling of measures with high unit reports.
These prefixes denote multiples and fractions of 1 000.

Examples :

1K is equivalent to 1000 years.
-1K is equivalent to -1000 years ago thousand years.

1M is equivalent to 1 million years 1 Million years.
-1M is equivalent to -1 million years ago 1 Million Years.

1G is equivalent to 1 billion years 1 billion years.
1G is equivalent to -1 billion years ago 1 Billion years.


Approximate dates.


history
An approximate date is a story about on the place where you know only the year or the year and month, etc..

It is possible to specify only the year.
It is possible to specify only the year and the month and the day.
It is possible to specify only the year and the month and the day and the hour.

It is possible to specify a approximate time interval.

Examples :

Between the year 750 and the year 780.
Between the year -52 and the year -51.
Between the month of May 1915 and the month of June 1915.


Input format.


contents

Start date.



Year


Mandatory minimum for a date.
Number with sign.
Metric prefix.

Month


Number.
Interval of 1 to 12.

Day


Number.
Interval of 1 to 31.

Hour


Number.
Interval of 0 to 23.

Minute


Number.
Interval of 0 to 59.


End date.


To specify a period.
Date must be greater than the start date.

Year


Mandatory minimum for a date.
Number with sign.
Metric prefix.

Month


Number.
Interval of 1 to 12.

Day


Number.
Interval of 1 to 31.

Hour


Number.
Interval of 0 to 23.

Minute


Number.
Interval of 0 to 59.

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