Allows you to pick a datetime using long type.

Tip

This will requires you to manually convert long to DateTime. You may want to see Extended Serialization to directly serialize a DateTime type

using SaintsField;

[DateTime]  // Save value in this
public long dt;
// Use this in script
public DateTime MyDateTime => new DateTime(dt);

[ShowInInspector] private long v => dt;

It works with ShowInInspector

[ShowInInspector, DateTime]
private long ShowDt
{
    get => dt;
    set => dt = value;
}

It works with ShowInInspector/Button parameters & return value

[ShowInInspector]
[DateTime]
private long ShowDatetime([DateTime] long dt) => dt;

[Button]
[DateTime]
private long ShowDatetime([DateTime] long dt) => dt;