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.
There are many different symptoms associated with cardiac arrhythmias or irregular heart rate. However, sometimes there are no symptoms at all and the arrhythmia is found incidentally. Some of the symptoms associated with cardiac arrythmias are heart palpitations, dizziness, light-headedness, and shortness of breath.