Poco

class Timezone

Library: Foundation
Package: DateTime
Header: Poco/Timezone.h

Description

This class provides information about the current timezone.

Member Summary

Member Functions: dst, dstName, isDst, name, standardName, tzd, utcOffset

Member Functions

dst static

static int dst();

Returns the daylight saving time offset in seconds if daylight saving time is in use.

local time = UTC + utcOffset() + dst().

dst static

static int dst(
    const Poco::Timestamp & timestamp
);

Returns the daylight saving time offset in seconds if daylight saving time is in use for the given time.

local time = UTC + utcOffset() + dst().

dstName static

static std::string dstName();

Returns the timezone name if daylight saving time is in effect.

isDst static

static bool isDst(
    const Timestamp & timestamp
);

Returns true if daylight saving time is in effect for the given time. Depending on the operating system platform this might only work reliably for certain date ranges, as the C library's localtime() function is used.

name static

static std::string name();

Returns the timezone name currently in effect.

standardName static

static std::string standardName();

Returns the timezone name if not daylight saving time is in effect.

tzd static

static int tzd();

Returns the time zone differential for the current timezone. The timezone differential is computed as utcOffset() + dst() and is expressed in seconds.

utcOffset static

static int utcOffset();

Returns the offset of local time to UTC, in seconds.

local time = UTC + utcOffset() + dst().
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