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.
Circulatory -- dizziness can occur if not enough blood flow reaches the brain. Neurological -- dysfunction of peripheral nerves, the brain or spinal cord can make you feel dizzy. Inner ear -- the inner ear is largely responsible for our sense of balance and equilibrium, so disorders of the inner ear can cause dizziness.