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.
In the spring and summer, most common loons live on lakes and other waterways in Canada and the northern United States. The summer habitat of Common Loons ranges from wooded lakes to tundra ponds. The lakes must be large enough for take-off and provide a high population of small fish.