Datetime.conf

The output, or display, of dates and times inside dateRange metadata elements can be configured in datetime.conf. For valid formats for dates and times, please visit Date and Time Formats.

Date/time output configuration

In Datetime.conf, you may define common text expressions you wish to have the date/time parser convert to dates. The text expression on the left side of the equal sign must be all lowercase; the date/time expression on the right side must be valid and parsable:

expressions = {
   us civil war = 1861 to 1865,
       world war 2  = 1939 to 1945,
   nickel empire = 1920s,
}

Output options for date/times

Setting	Description	Options
dateFormat	Format to use for dates. “Original” is the date as entered by the user; other values will normalize all date/time input to the selected standard format.	Valid values are text, delimited, iso8601, and original. The default is text.
timeOmit	You may output or omit the time portion of date time expressions.	1 (yes) or 0 (no)
showCommaAfterDayForTextDates	If set to a non-zero value commas are included after the day in a US-style (month first) text date	Default = 0
timeFormat	Format to use for times. “12” displays as, for example, 3:15 PM, where “24” would display at 15:15PM.	Valid values are 12 and 24. Default = 24.
useQuarterCenturySyntaxForDisplay	If true dates ranging over uniform quarter centuries, such as 1900-1925 or 1975-2000 will be output in the format “20 Q1” eg. 1st quarter of 20th century, or 1900-1925.	1 (yes) or 0 (no)
useRomanNumeralsForCenturies	If true century only dates (eg “18th century”) will be output in roman numerals like “XVIIIth century”.	1 (yes) or 0 (no)
timeDelimiter	Delimiter in time display; must be valid for the current language or default will be used; Default is first delimiter in language config file.	:
timeRangeConjunction	Text to put between times in a range; must be valid for the current language or default will be used; default is first in language config.	-
rangePreConjunction	Text to place before date/times in a range; must be valid for the current language or default will be used. Default is none.	from
rangeConjunction	Text to place between date/times in a range; must be valid for the current language or default will be used.	to
dateTimeConjunction	Text to put between times in a range; must be valid for the current language or default will be used; default is first in language config.	to
showADEra	If set to a non-zero value the “AD” era will be show for all dates; default is to only show it in ranges that span era	1 or 0
uncertaintyIndicator	Text to use to indicate date is uncertain; must be valid for the current language or default will be used.	circa
dateDelimiter	Text to place before date/times in a range; must be valid for the current language or default will be used. Default is none.
circaIndicator	Text to place before date/times to indicate it is a “circa”, or uncertain, date. Must be valid for the current language or default will be used.	circa
beforeQualifier	Text to place before a date/time to indicate that it is no later than the specified date; must be valid for the current language or default will be used.	before/prior to
afterQualifier	Text to place before a date/time to indicate that it is no earlier than the specified date; must be valid for the current language or default will be used.	after
presentDate	Text that represents the current date; must be valid for the current language or default will be used.	today