Sherwin Daganato edited this page Oct 11, 2017
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4 revisions
- Introduction
- Searching the DateTime archives
- Why use DateTime?
- Where is calendar X?
- How do I use DateTime?
- How do I make a DateTime object?
- Why do I need to truncate dates?
- When do I need to clone dates?
- How do I compare two dates?
- How do I convert a date from format FOO into a DateTime object (and vice versa)?
- I printed a date with strftime, how do I parse it again?
- How can I get a string representing a date?
- How small an increment of time can I represent?
- How do I parse multiple formats at once?
- How do I make a DateTime from a string?
- What is the floating time zone?
- If I know my local time, how do I determine the local time in another time zone?
- How do I change the time zone without changing the local time?
- Why doesn't DateTime accept the EST time zone?
- How Do I Convert between Epoch Times and DateTime Objects?
- How Do I Convert between Times from the Perl Builtin Functionality and DateTime Objects?
- How Do I Convert between POSIX Times and DateTime Objects?
- How Do I Convert between Time::HiRes and DateTime Objects?
- How Do I Convert between Times from the TimeDate Family and DateTime Objects?
- How Do I Convert between Time::Piece Times and DateTime Objects?
- How Do I Convert between Date::Manip and DateTime Objects?
- How Do I Convert between Date::Calc Times and DateTime Objects?
- What is a DateTime::Duration?
- What are the three endofmonth modes in DateTime::Duration?
- What are DateTime::Set objects?
- How do I get at the dates inside a DateTime::Set?
- What are the DateTime::Set set operations?
- Is there an easier way to create sets than writing subroutines?
- What are DateTime::Span objects?
- What are DateTime::SpanSet objects?
- How do I check whether a given date lies within a certain range of days?
- How do I check whether two dates and times lie more or less than a given time interval apart?
- How do I verify whether someone has a certain age?
- How can I calculate the day of the week if I want to consider Sunday the first day of the week?
- How do I calculate the number of the week of month the given date lies in?
- How do I calculate the date of the Wednesday of the same week as the current date?
- How do I calculate the last and the next Saturday for any given date?
- How can I calculate the last business day (payday!) of a month?
- How can I find what day the third Friday of a month is on?
- How can I iterate through a range of dates?
- How can I create a list of dates in a certain range?
- How can I calculate the difference in days between dates?
- How can I calculate the difference between two times, but without counting Saturdays and Sundays or calculate business time between two times?
- How do I find yesterday's Date?
- How do I do business week calculations?
- How do I localize dates?
- What are with GMT, TAI, UTC, and UT1?
- How does DST affect day length?