Lunar calendar average length of the synodic month is days. Thus it is convenient if months generally alternate between 29 and 30 days (sometimes termed respectively “"hollow"” and “"full"”). The distribution of "hollow" and "full" months can be determined using continued fractions, and examining successive approximations for the length of the month in terms of fractions of a day. In the list below, after the number of days listed in the numerator, an integer number of months as listed in the denominator have been completed: These fractions can be used to construct a lunar calendar, or in combination with a solar calendar
Riverside Beaver County School District and administrators with an average teacher salary of $57,898 and a top salary of $112,815. The work year is 186 days with 180 student instruction days. Teachers work 7 hours 45 minutes with a 30-minute duty-free lunch and a daily preparation period. Teachers receive extra pay for extra required work like updating curriculum. Additionally, the teachers receive a defined benefit pension, health insurance, professional development reimbursement, 3 paid personal days, 10 paid sick days (which accumulate) vision insurance, dental insurance and many other benefits. Guidance counselors receive extra $400 pay plus extra summer pay. In 2011, the average teacher salary