NodaTime by Jon Skeet

<PackageReference Include="NodaTime" Version="2.1.5" />

 NodaTime 2.1.5

Noda Time is a date and time API acting as an alternative to the built-in DateTime/DateTimeOffset etc types built into the .NET framework.

<package xmlns="http://schemas.microsoft.com/packaging/2013/05/nuspec.xsd">
  <metadata>
    <id>NodaTime</id>
    <version>2.1.5</version>
    <authors>Jon Skeet</authors>
    <owners>Jon Skeet</owners>
    <requireLicenseAcceptance>false</requireLicenseAcceptance>
    <licenseUrl>http://www.apache.org/licenses/LICENSE-2.0</licenseUrl>
    <projectUrl>http://nodatime.org/</projectUrl>
    <description>Noda Time is a date and time API acting as an alternative to the built-in DateTime/DateTimeOffset etc types built into the .NET framework.</description>
    <tags>date time timezone calendar nodatime</tags>
    <repository url="https://github.com/nodatime/nodatime.git" />
    <dependencies>
      <group targetFramework=".NETFramework4.5" />
      <group targetFramework=".NETStandard1.3">
        <dependency id="NETStandard.Library" version="1.6.1" exclude="Build,Analyzers" />
        <dependency id="System.Runtime.Serialization.Xml" version="4.1.1" exclude="Build,Analyzers" />
      </group>
    </dependencies>
  </metadata>
</package>