NEWS

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datetimeutils 0.6-5 (2025-04-01)

• tz data have been updated
• a vector 'Easter' is now exported, which provides Easter sundays (in the Gregorian calendar) between 1970--2029

datetimeutils 0.6-4 (2024-04-01)

• tz data have been updated

datetimeutils 0.6-3 (2023-11-07)

• fix functions 'hour', 'minute' and 'second', which had been broken

datetimeutils 0.6-2 (2023-09-20)

• tiny updates in vignette
• there is an additional public Git repository at https://git.sr.ht/~enricoschumann/datetimeutils

datetimeutils 0.6-1 (2023-04-05)

• no user-visible changes (fixed some timezone issues in tests)

datetimeutils 0.6-0 (2023-04-01)

• fixed: functions 'hour' 'minute', and 'second', which had been added in v0.5-0, are now exported
• patterns for days in 'guess_datetime' are relaxed: in some cases a single digit will be recognised
• 'previous_businessday', 'next_businessday' and 'is_businessday' now take into account a vector of 'holidays' when computing dates
• 'convert_date' gains a new type "excel1904" for Excel files that use origin 1904-01-01. A new function 'date1904' determines if an xlsx-file uses origin 1904.
• tz data have been updated

datetimeutils 0.5-0 (2021-04-01)

• fixed: argument 'tz' had been ignored by 'guess_datetime'
• 'guess_datetime' gets an argument 'try.patterns' that lets the user specify additionals patterns
• new functions 'hour' 'minute', and 'second', which work just as 'year' etc.
• convert_date: support for PSPP/SPSS dates and times; based on a patch by J\"org Beyer
• 'tznames' has been updated and no longer contains duplicates

datetimeutils 0.4-0 (2020-03-25)

• guess_datetime: the function now supports the date pattern "YYYYMMDD"; it also gains arguments 'date.only', 'within' and 'tz'
• the package now contains vectors 'month.name.de' and 'month.abb.de.din1355.1', which provide German month names and their abbreviations
• the package now contains a data.frame 'tznames', which provides a mapping between Olson and Windows timezone names

datetimeutils 0.3-0 (2019-03-21)

• new function 'end_of_quarter'
• nth_day: argument 'period' may now also be a month name. Arguments 'timestamps', 'start' and 'end' may be simple years, such as "2000". For start/end, they will be interpreted as 1 Jan/31 Dec of that year.

datetimeutils 0.2-12 (2018-03-10)

• nth_day: argument 'n' may be of length greater than 1

datetimeutils 0.2-11

• timegrid: argument 'excludeWeekends' was renamed to 'exclude.weekends' (for consistency with other functions, such as PMwR::plot_trading_hours)
• nth_day: argument 'period' may now also be "week" or "year"; argument 'n' may now also be numeric

datetimeutils 0.2-10

• nth_day: argument 'period' may be numeric

datetimeutils 0.2-9

• new functions 'year', 'month' and 'nth_day'

datetimeutils 0.2-8

• minor change in example for 'timegrid' to avoid error on Solaris

datetimeutils 0.2-7 (2017-08-28)

• 'last_weekday' now supports arguments 'before' and 'inclusive'

datetimeutils 0.2-6

• new function 'end_of_previous_year'
• fixed: the 'shift' argument in 'end_of_year' had been applied to months instead of years

datetimeutils 0.2-5

• add vignette with examples

datetimeutils 0.2-4

• update documentation + internal changes

datetimeutils 0.2-3

• new function 'guess_datetime'

datetimeutils 0.2-2

• fixed: 'timegrid' had failed when timezone was missing

datetimeutils 0.2-1

• fixed: 'timegrid' had ignored the 'excludeWeekends' argument

datetimeutils 0.2-0

• *backward* *incompatible* *changes*. for better consistency, several functions have been renamed: convertDate => convert_date convertTZ => convert_tz dayOfMonth => "day_of_month<-" dayOfMonth => day_of_month endOfMonth => end_of_month endOfPreviousMonth => end_of_previous_month endOfYear => end_of_year firstOfMonth => first_of_month firstOfYear => first_of_year isBusinessDay => is_businessday isLeapyear => is_leapyear isWeekend => is_weekend lastWeekday => last_weekday nextBDay => next_bday nextBusinessDay => next_businessday nthWeekday => nth_weekday prevBDay => prev_bday previousBusinessDay => previous_businessday

datetimeutils 0.1-5

• add short-hands 'prevBDay' and 'nextBDay' for 'previousBusinessDay' and 'nextBusinessDay'

datetimeutils 0.1-4

• fixed: 'nthWeekday' had failed in some cases
• new function 'isBusinessDay'

datetimeutils 0.1-3

• new function 'convertTZ'

datetimeutils 0.1-2

• new function 'firstOfYear'

datetimeutils 0.1-0

• there is now a public Git repository at https://github.com/enricoschumann/datetimeutils