What does Aditya mean?
From Sanskrit Aditya (आदित्य), 'belonging to Aditi', a name of the sun god Surya and collectively of the solar deities born of the goddess Aditi. A well-attested classical name meaning 'the sun'.
What does Ishaan mean?
From Sanskrit ishana (ईशान), 'ruler, master', also a name of the sun and an epithet of Shiva (lord of the northeast direction). Glossed both as 'the sun' and 'lord/ruler'.