Venus, the “morning star,” is to the lower left of the Moon at first light on the 15th, with Mars above the Moon. Venus is close to the left of the Moon on the 16th. Regulus is to their lower left.
Leo, the Lion
The zodiacal constellation Leo, the lion, is one of a handful of constellations that really does look like its namesake. Look for Leo high in south in April and May.
Leo's brightest star is blue-white Regulus, one of the brightest stars in the night sky. Regulus rises almost due east, with the body of the lion following it into the sky over the next couple of hours. Once Regulus climbs into the sky, look to its left toward the north for a group of stars forming a backward question mark. These stars outline Leo's head and mane.
About two hours later, look low in the east for Leo's tail a white star named Denebola an Arabic name that, means "tail of the lion."