Soenneker.Extensions.DateTimeOffsets.Days 4.0.135

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There is a newer version of this package available.
See the version list below for details.

dotnet add package Soenneker.Extensions.DateTimeOffsets.Days --version 4.0.135

NuGet\Install-Package Soenneker.Extensions.DateTimeOffsets.Days -Version 4.0.135

This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.

<PackageReference Include="Soenneker.Extensions.DateTimeOffsets.Days" Version="4.0.135" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="Soenneker.Extensions.DateTimeOffsets.Days" Version="4.0.135" />
                    

                            Directory.Packages.props

<PackageReference Include="Soenneker.Extensions.DateTimeOffsets.Days" />
                    

                            Project file

For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.

paket add Soenneker.Extensions.DateTimeOffsets.Days --version 4.0.135

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: Soenneker.Extensions.DateTimeOffsets.Days, 4.0.135"

#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.

#:package Soenneker.Extensions.DateTimeOffsets.Days@4.0.135

#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.

#addin nuget:?package=Soenneker.Extensions.DateTimeOffsets.Days&version=4.0.135
                    

                            Install as a Cake Addin

#tool nuget:?package=Soenneker.Extensions.DateTimeOffsets.Days&version=4.0.135
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Soenneker.Extensions.DateTimeOffsets.Days

Computes current, previous, and next day boundaries for DateTimeOffset, either in its stored offset or in a named time zone with UTC results.

Installation

dotnet add package Soenneker.Extensions.DateTimeOffsets.Days

Boundaries in the stored offset

using Soenneker.Extensions.DateTimeOffsets.Days;

DateTimeOffset value = new(2026, 8, 29, 16, 42, 30, TimeSpan.FromHours(-4));

DateTimeOffset start = value.ToStartOfDay();
DateTimeOffset end = value.ToEndOfDay();
DateTimeOffset previousStart = value.ToStartOfPreviousDay();
DateTimeOffset nextEnd = value.ToEndOfNextDay();

Method	Result
`ToStartOfDay()`	Midnight on the stored calendar date
`ToEndOfDay()`	One tick before the next stored date
`ToStartOfPreviousDay()`	Midnight on the previous stored date
`ToEndOfPreviousDay()`	One tick before the current stored date
`ToStartOfNextDay()`	Midnight on the next stored date
`ToEndOfNextDay()`	One tick before the date after next

These methods preserve the value's offset and use calendar arithmetic on its existing fields. They do not consult a TimeZoneInfo, so that fixed offset does not automatically change across DST.

Boundaries in a named time zone

TimeZoneInfo eastern = TimeZoneInfo.FindSystemTimeZoneById("America/New_York");
DateTimeOffset instant = new(2026, 8, 29, 18, 0, 0, TimeSpan.Zero);

DateTimeOffset localDayStartUtc = instant.ToStartOfTzDay(eastern);
DateTimeOffset localDayEndUtc = instant.ToEndOfTzDay(eastern);

Time-zone variants determine the instant's local calendar date and return the current, previous, or next local-day boundary with offset +00:00:

ToStartOfTzDay() / ToEndOfTzDay()
ToStartOfPreviousTzDay() / ToEndOfPreviousTzDay()
ToStartOfNextTzDay() / ToEndOfNextTzDay()

Any input offset is accepted because DateTimeOffset identifies an instant. A midnight inside a time-zone gap advances minute-by-minute to the first valid local minute. An ambiguous midnight selects the earlier UTC instant. End values are one tick before the following valid local-day boundary, so 23-hour and 25-hour days are not treated as fixed 24-hour intervals.

Day-of-week mapping

DayOfWeekType day = value.ToDayOfWeekType();

ToDayOfWeekType() maps the System.DayOfWeek of the value's stored calendar date to Soenneker.Enums.DayOfWeek.DayOfWeekType. It does not perform a time-zone conversion first.

Product	Compatible and additional computed target framework versions.
.NET	net10.0 is compatible. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed.

Compatible target framework(s)

Included target framework(s) (in package)

Learn more about Target Frameworks and .NET Standard.

net10.0
- Soenneker.Enums.DayOfWeek (>= 4.0.765)
- Soenneker.Extensions.DateTimeOffsets (>= 4.0.131)

NuGet packages (1)

Showing the top 1 NuGet packages that depend on Soenneker.Extensions.DateTimeOffsets.Days:

Package	Downloads
Soenneker.Extensions.DateTimeOffsets.DayOfWeeks A collection of helpful DateTimeOffset DayOfWeek extension methods	29.7K

GitHub repositories

This package is not used by any popular GitHub repositories.

Version	Downloads	Last Updated
4.0.145	0	9/7/2026
4.0.144	41	9/7/2026
4.0.143	178	9/4/2026
4.0.142	41	9/4/2026
4.0.141	46	9/4/2026
4.0.140	223	9/1/2026
4.0.139	166	8/31/2026
4.0.138	131	8/31/2026
4.0.137	131	8/31/2026
4.0.136	137	8/31/2026
4.0.135	197	8/30/2026
4.0.134	89	8/30/2026
4.0.133	85	8/30/2026
4.0.132	269	8/29/2026
4.0.131	383	8/26/2026
4.0.130	194	8/26/2026
4.0.129	97	8/25/2026
4.0.128	252	8/22/2026
4.0.127	180	8/21/2026

Update dependency Soenneker.Enums.DayOfWeek to 4.0.765 (#292)