![]() the United States Senate unanimously passed the Sunshine Protection Act of 2021. The seasons are defined as spring (March, April, May), summer (June, July, August), autumn (September, October, November) and winter (December, January, February). Heres what to know about when we spring forward, and why we started. By the meteorological calendar, spring will always start on 1 March ending on 31 May. ![]() These seasons are split to coincide with our Gregorian calendar, making it easier for meteorological observing and forecasting to compare seasonal and monthly statistics. The meteorological seasons consist of splitting the seasons into four periods made up of three months each. Meteorological seasons are instead based on the annual temperature cycle and measure the meteorological state, as well as coinciding with the calendar to determine a clear transition between the seasons. ![]() This year, astronomical spring began on 20 March 2022 and ended on 21 June 2022.įor upcoming years, the dates for astronomical spring will be: Year When Does the 2021-22 Spring Semester Begin Colleges generally go back to school in January, but the exact date varies. Since the seasons vary in length, the start date of a new season can fall on different days each year. This is due to the 23.5 degrees of tilt of the Earth's rotational axis concerning its orbit around the Sun. For further information regarding Registration dates and times, click here.Astronomical seasons refer to the position of Earth's orbit in relation to the Sun, considering equinoxes and solstices. 2023-2024 calendars are being added as they become available. * For further information regarding semester part of term schedules and withdraw dates, please click here. Arizona School Calendar 2023 - Global » United States » School Calendar Arizona School Calendar 2023 Please choose your school district in Arizona from the list below to view a calendar of your 2022-2023 school holidays. Last Day of Class and Final Exams for Full & SSII Last Day to apply for Fall Semester Leave of Absence Last Day to Withdraw with Grade of "WP"/"WF" for SSII* Last Day to Withdraw with Grade of "W" For SSII*įirst Day to Withdraw with Grade of "WP"/"WF" for SSII* Last Day to Withdraw with Grade of "WP"/"WF" for Full Summer*įirst Day to Withdraw with Grade of "W" for SSII * Registration For Summer Session II Opens* Last Day of Class and Final Exams for SSI ![]() Last Day to Withdraw with Grade of "W" for Full Summer*įirst Day to Withdraw with Grade of "WP"/"WF" for Full Summer* Last Day to Withdraw with Grade of "WP/WF" for SSI* Graduation Application for December 2023 Deadline Astronomically speaking, the first day of spring is marked by the spring equinox, which falls on March 19, 20, or 21 every year. Spring 2021 starts on Saturday, March 20th in the Northern Hemisphere, with daylight time lengthening and the leaves begining show on the trees with the changing tilt of the earth's axis. Vernal equinox(about March 21): day and night of equal length, marking the start of spring Summer solstice (June 20 or 21): longest day of the year, marking. Last Day to Withdraw with Grade of "W" for Full/SSI*įirst Day to Withdraw with Grade of "WP/WF" for SSI* Last Day for Registration/Schedule Change/Drop w/Refund (F/SSI)įirst Day to Withdraw with Grade of "W" for Full/SSI* Graduation Application for August 2023 Deadline Last Day of Registration/Schedule Changes*įirst Day to Withdraw with Grade of "WP" or "WF"* For further information regarding Registration dates and times, click here. For further information on the Exam Schedule, click here.įirst Part of Term: January 11 - February 28 * For further information regarding semester part of term schedules and withdraw dates, please click here. Leave of Absence Applications for Spring 2023 Due Spring/May/Summer Undergraduate Registration Begins for returning students* Last Day to Withdraw for any reason from a course or University with grade "WP" or "WF"* Graduation Application for May 2023 Deadline The vernal (spring) equinox which marks the beginning of astronomical spring in the Northern Hemisphere will take place on Saturday, March 20, at 5:37 a.m. Last Day of Registration/Schedule Changes/Drop with Refund*įirst Day of Withdrawal with Grade of "W"*įirst Day of Withdrawal with Grade of "WP" or "WF"*įaculty Promotion/Tenure Applications DUEĬlassfinder LIVE for Spring/Summer Semesterįaculty Sabbatical/Study Leave Application Due Undergraduate Registration and Drop/Add Begins* We change our clocks twice per year, they spring forward as we enter British Summer Time and backwards again for Winter, here are the dates for these clock changes in 2023.
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