214         static immutable(TimeZone) testTZ(string tzName,
225                 immutable tz = PosixTimeZone.getTimeZone(tzName);  in version()
230                 immutable tz = WindowsTimeZone.getTimeZone(tzName);  in version()
234             immutable hasDST = dstOffset != Duration.zero;
241             immutable stdDate = DateTime(2010, north ? 1 : 7, 1, 6, 0, 0);
242             immutable dstDate = DateTime(2010, north ? 7 : 1, 1, 6, 0, 0);
384             immutable spring = dstSwitches[i][2];
385             immutable fall = dstSwitches[i][3];
396                 immutable targetHour = hour < 0 ? hour + 24 : hour;
510     this(string name, string stdName, string dstName) @safe immutable pure  in this()
520     immutable string _name;
521     immutable string _stdName;
522     immutable string _dstName;
763                     auto janOffset = SysTime(Date(currYear, 1, 4), cast(immutable) this).stdTime -  in hasDST()
765                     auto julyOffset = SysTime(Date(currYear, 7, 4), cast(immutable) this).stdTime -  in hasDST()
1249     this() @safe immutable pure  in this()
1255     static immutable UTC _utc = new immutable(UTC)();
1336         auto west = new immutable SimpleTimeZone(dur!"hours"(-8));
1337         auto east = new immutable SimpleTimeZone(dur!"hours"(8));
1975         immutable leapSecs = calculateLeapSeconds(adjTime);  in utcOffset()
1977         immutable past = unixTime - convert!("days", "seconds")(1);  in utcOffset()
1978         immutable future = unixTime + convert!("days", "seconds")(1);  in utcOffset()
1980         immutable pastFound = countUntil!"b < a.timeT"(_transitions, past);  in utcOffset()
1985         immutable futureFound = countUntil!"b < a.timeT"(_transitions[pastFound .. $], future);  in utcOffset()
1986         immutable pastTrans = pastFound == 0 ? _transitions[0] : _transitions[pastFound - 1];  in utcOffset()
1991         immutable futureTrans = futureFound == -1 ? _transitions.back  in utcOffset()
1993         immutable pastOffset = pastTrans.ttInfo.utcOffset;  in utcOffset()
1998 …   immutable found = countUntil!"b < a.timeT"(_transitions[pastFound .. $], unixTime - pastOffset);  in utcOffset()
2003         immutable transition = found == 0 ? pastTrans : _transitions[pastFound + found - 1];  in utcOffset()
2070 …static immutable(PosixTimeZone) getTimeZone(string name, string tzDatabaseDir = defaultTZDatabaseD…
2100         immutable gmtZone = name.representation().canFind("GMT");
2107             immutable char tzFileVersion = readVal!char(tzFile);
2197                 immutable char tzFileVersion2 = readVal!(char)(tzFile);
2314             auto ttInfos = new immutable(TTInfo)*[](tempTTInfos.length);
2325                 ttInfo = new immutable(TTInfo)(tempTTInfos[i], abbrev);
2331                 immutable ttiIndex = ttInfoIndices[i];
2384 …return new immutable PosixTimeZone(transitions.idup, leapSeconds.idup, name, stdName, dstName, has…
2536         this(long timeT, immutable (TTInfo)* ttInfo) @safe pure  in this()
2543         immutable (TTInfo)* ttInfo;
2568         this(scope const TempTTInfo tempTTInfo, string abbrev) @safe immutable pure  in this()
2575         immutable int    utcOffset;  // Offset from UTC.
2576         immutable bool   isDST;      // Whether DST is in effect.
2577         immutable string abbrev;     // The current abbreviation for the time zone.
2607         this(long timeT, immutable (TTInfo)* ttInfo, TransitionType* ttype) @safe pure  in this()
2615         immutable (TTInfo)* ttInfo;
2645         if ((isIntegral!T || isSomeChar!T) || is(immutable T == immutable bool))
2700         immutable unixTime = stdTimeToUnixTime(stdTime);  in calculateLeapSeconds()
2705         immutable found = countUntil!"b < a.timeT"(_leapSeconds, unixTime);  in calculateLeapSeconds()
2710         immutable leapSecond = found == 0 ? _leapSeconds[0] : _leapSeconds[found - 1];  in calculateLeapSeconds()
2716     this(immutable Transition[] transitions,  in this()
2717          immutable LeapSecond[] leapSeconds,  in this()
2721          bool hasDST) @safe immutable pure  in this()
2820     immutable Transition[] _transitions;
2823     immutable LeapSecond[] _leapSeconds;
2826     immutable bool _hasDST;
3123 …            immutable result = SystemTimeToTzSpecificLocalTime(cast(TIME_ZONE_INFORMATION*) tzInfo,  in version()
3128                 immutable otherDateTime = DateTime(otherTime.wYear,  in version()
3134                 immutable diff = utcDateTime - otherDateTime;  in version()
3135                 immutable minutes = diff.total!"minutes" - tzInfo.Bias;  in version()
3216 …            immutable result = TzSpecificLocalTimeToSystemTime(cast(TIME_ZONE_INFORMATION*) tzInfo,
3222                         immutable utcDateTime = DateTime(utcTime.wYear,
3229                         immutable diff = localDateTime - utcDateTime;
3230                         immutable minutes = -tzInfo.Bias - diff.total!"minutes";
3273         this(string name, TIME_ZONE_INFORMATION tzInfo) @trusted immutable pure
3411     immutable f1 = `<mapZone other="`;