Aruna is from the Sanskrit aruṇa (dawn, reddish-brown, the color of the morning sky). Aruna in Vedic tradition — the Vedic divinity of dawn; one of the oldest deities in Hindu tradition (3,500+ years); appears throughout the iconic Rigveda (c. 1500-1200 BCE — the oldest scripture of Hinduism and one of the oldest sacred texts in continuous use); traditionally depicted as the charioteer of Surya (the sun god) — driving the sun across the sky each day; the iconic Aruna Stotra hymns of Vedic worship celebrate the dawn's arrival; central to traditional Hindu morning prayer (Sandhya Vandanam); appears in iconic Indian classical music ragas like Aruna Ragam. Aruna Irani (born 1946) — Indian Bollywood actress. Princess Aruna — Hindu heritage naming.
Aruna does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Aruna reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.