net9.0 
namespace System
{
    public readonly struct TimeSpan : IComparable, IComparable<TimeSpan>, IEquatable<TimeSpan>, IFormattable, IParsable<TimeSpan>, ISpanFormattable, ISpanParsable<TimeSpan>, IUtf8SpanFormattable
    {
        public const long SecondsPerDay = 86400L;
    }
}
.NET
9.0
Information specific to net9.0
Assembly

System.Runtime , Version=9.0.0.0, PublicKeyToken=b03f5f7f11d50a3a

Referencing

The API is automatically referenced.

Platform Restrictions

This API is supported on all platforms.

  • Built-in API
  • Package-provided API