Although the subspecies of painted turtle intergrade (blend together) at range boundaries they are distinct within the hearts of their ranges. 1  The male eastern painted turtle (C. 2  The midland painted turtle (C. 3  The southern painted turtle 4  (C. The largest subspecies is the western painted turtle  (C.
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.
The astronomical spring begins on 20 March 2017 and ends on 20 June 2017. The astronomical calendar determines the seasons due to the 23.5 degree tilt of the Earth's rotational axis in relation to its orbit around the sun. Both equinoxes and solstices are related to the Earth's orbit around the sun.