According to the Department of Education 180 is the minimum number of instructional days California requires of its public schools. The 180 days doesn`t include in-service days for teachers.
Loon, Arctic also Black-throated Loon also Black-Throated Diver Gavia arctica Found: North America (Alaska), Europe, Asia. The Arctic Loon has white underparts. Breeding has black back with white bars; black face; black sides of throat with white stripes; dark green throat.
L. loa is a threadlike species 2.5 to 5 cm long found in West Africa. It inhabits the subcutaneous connective tissue of the human body and is seen especially as an eye worm about the orbit and under the conjunctiva.