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InnerDrive.TimeZones 5.3.1498

Inner Drive Extensible Architeture

The Inner Drive Extensible Architecture implements common .NET development situations including time zones, money, measurements and conversions, and Microsoft Azure features.

InnerDrive.TimeZones

Features

• Implements the IANA time zone database with an easy-to-use API
• Zones are JIT-compiled for small memory footprint and quick initialization
• Optional extension in the InnerDrive.Azure package to load zone info from Azure blobs
• Works with native .NET data types (System.DateTime and System.DateTimeOffset)

Prerequisites

This package runs on .NET 10. It depends on the InnerDrive.Core package.

Usage

1. Download the IANA time zone database
2. Add settings to appSettings.json:

{
	"timeZoneSettings": {
		"DefaultTimeZoneHomeZone": "America/Chicago",
		"TimeZoneRuleFolder": ".\\",
		"TimeZoneRuleFileFull": "asia,europe,northAmerica,southAmerica,backward,etcetera"
	}

3. Initialize the TimeZoneFactory:

@inject IConfiguration Configuration

var fileSpec = Configuration[key];
var reader = new LocalTzInfoFileReader(Configuration);
await reader.LoadAsync(fileSpec);
var factory = new TimeZoneFactory(Configuration, reader) { ThrowOnFailure = true };
await factory.LoadFileDataAsync();
await factory.InitializeAsync();

4. Get local time in your time zone:

var timeZone = await factory.FindAsync("America/Chicago", ZoneNotFoundBehavior.ReturnDefault);
var now = DateTimeOffset.UtcNow;
var localTime = timeZone.ToLocalTime(now);
var testZoneName = Configuration[TimeZoneFactory.DefaultTimeZoneNameSettingKey];
Trace.WriteLine($"{now} == {localTime}");

Output >> 2025-10-05 16:11:34 +00:00 == 2025-10-05 11:11:34 -05:00

var info = timeZone.CurrentInfo(now);
Trace.WriteLine(info);

Output >> 2025-10-05 11:11 CDT

The Inner Drive Technology website has a full SDK and example code. We also have a demo weather site that uses all the IDEA components.

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Comments or questions?