Automatic Build Date/Time

using UnityEngine;

[ExecuteInEditMode]
public class RefreshTestCS: MonoBehaviour
{
    public string buildName;

    public void OnGUI() {
        GUILayout.Label("Build name: " + buildName);
    }

#if UNITY_EDITOR
    public void Awake() {
        if (Application.isEditor && !Application.isPlaying) {
            buildName = System.DateTime.Now.ToString() + " (" + (UnityEditor.BuildPipeline.isBuildingPlayer ? "during build)" : "during edit)");
        }
    }
#endif
}