MakoIoT.Device.Utilities.TimeZones 1.0.21.23332

Mako-IoT.Device.Utilities.TimeZones

The way to get local date & time on your device. Given time zone definition the library converts UTC to local time, handles Daylight Saving Time transitions as well.

Usage

Create TimeZone object

Time zone without DST

var timezone = new TimeZone(utcOffset);

Time zone with DST

var timezone = new TimeZone(standardUtcOffset, dstUtcOffset, dstStarts, dstEnds);

DST transition dates

Time zones across the globe have various rules about transition to and from DST. To accomodate that we can provide transition dates in two ways:

1. FixedDate - fixed month and day of the year

//DST starts every year on the 20th of June at 2:00 AM
var dstStarts = new FixedDate(new DateTime(2023, 20, 6, 2, 0, 0));

2. FloatingDate - weekday of given week in a month

//DST starts on the second Sunday of March at 2:00 AM
var dstStarts = new FloatingDate(3, 2, DayOfWeek.Sunday, 2, 0, 0);

Get date & time

Getting local time

var localTime = timezone.GetLocalTime(utcDateTime);

Check if DST is observed at given date and time

var isDst = timezone.IsDst(utcDateTime);

POSIX format

POSIX format lets you define all time zone's details in a compact string. For example "CET-1CEST,M3.5.0,M10.5.0/3" means:

• Standard time name: CET
• UTC offset: -1 hour
• DST time name: CEST
• DST starts on the last (5) Sunday (0) of March (3) at 2:00 AM (/3)
• DST ends on the last (5) Sunday (0) of October (10) at 3:00 AM (/3)

Use TimeZoneConverter to parse POSIX string into TimeZone object and vice versa

var timezone = TimeZoneConverter.FromPosixString(posixString);