arsekund

Could you clarify what arsekund refers to? Is it a real term in a particular language, a place, a person, or a fictional concept? If you want a wiki-style article, please specify the intended meaning and context. For example, if arsekund is a fictional unit of time, I can write a concise, neutral entry defining its value, origin, and usage in a hypothetical setting. Any preferred length (under 300 words) and tone details would also help.