Suggested Alternatives


Additional Details

This is the last strong named package. CronBuilder is updated to use the standard cron functionality, serialization, and not strong named.

dotnet add package Cron.Core.StrongNamed --version
NuGet\Install-Package Cron.Core.StrongNamed -Version
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="Cron.Core.StrongNamed" Version="" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Cron.Core.StrongNamed --version
#r "nuget: Cron.Core.StrongNamed,"
#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.
// Install Cron.Core.StrongNamed as a Cake Addin
#addin nuget:?package=Cron.Core.StrongNamed&version=

// Install Cron.Core.StrongNamed as a Cake Tool
#tool nuget:?package=Cron.Core.StrongNamed&version=


Cron Builder object that can be used to build Cron expressions, describe them, and manipulate objects.

Feature Overview

  1. Build Cron Expression.
  2. Create Cron by Expression.
  3. Display Description of Cron expression or a section.
  4. Expression Chaining of Cron object and Sections (Seconds, Minutes, Hours, DayMonth, Months, DayWeek, Year).
  5. Set intervals or specific times on Time Sections (Seconds, Minutes, Hours).
  6. Set specific date sections (DayMonth, Months, DayWeek, Year).


Create a new CronBuilder Object.

Create Default Cron Object.

    schedule = new CronBuilder();

Create Cron object with an existing expression.

    var cron = new CronBuilder(expression);

Create Initial Cron object with Days.

    var cron = new CronBuilder
                { CronDays.Thursday, CronDays.Saturday }

Create Initial Cron object with Months.

    var cron = new CronBuilder
        { CronMonths.August, CronMonths.November }

Create Initial Cron object with Months and Day.

    var cron = new CronBuilder
        { CronDays.Thursday, CronMonths.November }

Build Cron by Section.

Add to Cron with sections.

    schedule.Add(time: CronTimeSections.Seconds, value: seconds, repeatEvery: true)
    schedule.Add(CronTimeSections.Minutes, 4)
    schedule.Add(CronTimeSections.Hours, 3, 5)

Add a Month Restriction to the Cron Expression.


Add a Day of the Week Restriction to the Cron Expression.


Chain Cron and Sections.

    schedule = new CronBuilder();
        .Add(CronTimeSections.DayMonth, dayMonth)
        .Add(CronTimeSections.Years, years, true)

Display Cron Description

    var descCron = cron.Description;
    var descSeconds = cron.Seconds.Description;

Remove all or parts of a Cron Expression.

Remove only one entry of 5 in Seconds.

    cron.Remove(CronTimeSections.Seconds, 5);                

Remove only one entry Range of Seconds.

    cron.Remove(CronTimeSections.Seconds, 5, 6);

Reset / Remove All of the Day of the Week section.


Reset all sections to the defaults.




Minor Cleanup and Fixes / Update packages.


Cron Object renamed to CronBuilder to simplify creation due to conflicting namespace.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated 2,346 1/23/2021 502 11/22/2020 397 11/17/2020 500 11/15/2020 952 11/12/2020 623 11/10/2020 Cron renamed to Cron Builder. Bug Fixes in Description property.