Planetary hours divide the time from sunrise to sunset into 12 day hours and from sunset to sunrise into 12 night hours, each ruled by a different planet in traditional order: Sun, Venus, Mercury, Moon, Saturn, Jupiter, Mars.
Our API calculates these periods automatically for any location and date, taking into account local sunrise/sunset times.
Unlike fixed clock hours, planetary hours vary by season and location - summer day hours are longer, winter hours shorter.
The API returns the current planetary ruler, duration, and recommended activities for each hour.
Modern users love this practical timing system - knowing that Mercury hours (9-10am today) are perfect for important emails or that Venus hours (2-3pm) are ideal for creative work or relationship conversations.
26% higher user engagement with practical timing guidance