In some cultures in the Northern Hemisphere, the astronomical March equinox (varying between 19 and 21 March) is taken to mark the first day of spring, and the Northern solstice (around 21 June) is taken as the first day of summer. In other traditions, the equinox is taken as mid-spring.
Circulation problems that cause dizziness. You may feel dizzy, faint or off balance if your heart isn't pumping enough blood to your brain. Causes include: 1  Drop in blood pressure.
Atrial fibrillation Atrial fibrillation is a heart condition that causes heart palpitations, confusion, dizziness and more. Low blood pressure (hypotension) Low blood pressure, or hypotension, can make you feel lightheaded and dizzy. Mononucleosis Mononucleosis is a viral infection causing extreme fatigue, sore throat, fever, rash, muscle aches, and more.