Results for &#x201C;Dates &amp; time zones&#x201D;

Convert a Unix timestamp to aware UTC

Python: Supply timezone.utc so the result does not depend on the machine time zone.

Convert an aware datetime to another offset

Python: Use astimezone for conversion; replacing tzinfo alone does not convert an instant.

Convert an instant to a regional timezone

Java: Use ZonedDateTime with a named zone to apply that zone’s offset rules.

Count days between calendar dates

Python: Subtract date objects to get an exact calendar-day difference.

Count days between two dates

Java: Use ChronoUnit.DAYS for an elapsed count rather than a Period day component.

Generate a half-open range of dates

Java: datesUntil includes the starting date and excludes the end date.

Skip weekends when advancing dates

Python: Walk calendar dates and count only Monday through Friday.

Advance a date by a number of days

Python: Use timedelta so month and year boundaries are handled automatically.

Check the Gregorian leap-year rule

Java: Use Year.isLeap rather than checking divisibility by four alone.

Convert a duration to hours and minutes

Python: Use divmod to split nonnegative whole seconds into display components.

Convert epoch seconds into an instant

Java: Instant represents a UTC timeline point independent of the default timezone.

Determine whether a year is a leap year

Python: Use calendar.isleap rather than a simplified divisibility-by-four check.