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Welcome to the archives of Syria Deeply. While we paused regular publication of the site on May 15, 2018, and transitioned some of our coverage to Peacebuilding Deeply, we are happy to serve as an ongoing public resource on the Syrian conflict. We hope you’ll enjoy the reporting and analysis that was produced by our dedicated community of editors contributors.

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When Is | Spring

Meteorologists and climatologists use a different system. To make record-keeping easier and more consistent, they divide the year into four three-month periods based on the calendar and annual temperature cycles. Spring runs from March 1 to May 31 .

The start date of spring varies depending on the location and the definition of spring. There are two main ways to define the start of spring: when is spring

The return of migratory birds (like robins or swallows) and the end of hibernation for bees and bears. Meteorologists and climatologists use a different system

If you meant a calendar-based "solid feature" for data modeling or recurring events, many systems use fixed meteorological dates: many systems use fixed meteorological dates:

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