This interface describes that during the last minute of a given calendar day an UTC-leapsecond was either introducted or left out.
This SPI-interface describes when UTC-leapseconds were introduced.
This SPI-interface describes how nanoseconds since an arbitrary start time are generated.
Defines a time point respective coordinate on the universal timeline as the count of seconds relative to UTC epoch [1972-01-01T00:00:00Z] in the UTC-timezone (Greenwich meridian) and a nanosecond as part of last second.
Holds all leap seconds occurred since the official start of UTC in 1972.
Defines some time scales for usage both in civil life and in science.
This package handles the UTC timeline (Corrected Universal Time) and other time scales.
Tools for conversion of time scales and calculation of UTC-leapseconds
are offered, see the classes
Every chronology has its own elements, units and rules but all
systems where time points implement the interface
have the same common reference to UTC time scale. This way a common
storage model for different systems and timezones can be realized such
that all local timestamps can finally be stored as UTC (using timezones).
If as special case timezone rules possibly change (DST changes) and the
timestamps to be stored are in the future then the alternative would
be to save all temporal element values including the local time the timezone
and the daylight-saving-rule to be applied.
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