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 spring equinox, the point at which the length of day and night is equal, falls on 20th March this year and usually marks the beginning of spring. However, the date of the spring equinox varies slightly from year to year. It can fall as early as 19th March or as late as 21st. Since spring (and other seasons) can begin on different days each year, it can be hard to compare seasons from year to year. To standardise the length and start of the seasons, in meteorology, the 12 months of the year have been split up into four, 3-month periods. Therefore, meteorological spring begins on 1 March every year and ends on 31 May, allowing weather forecasters to accurately make comparisons between different springs.