In terms of complete months, in most North Temperate Zone locations, spring months are March, April and May, although differences exist from country to country. In the USA and some other regions in the Northern Hemisphere, the astronomical March equinox (around 21 March) is often taken to mark the first day of spring, and the Northern solstice is sometimes taken as the first day of summer (around 21 June in the Northern Hemisphere).
- This calendar, which had no graphed or written form, marked activities such as hunting, fishing, planting, harvesting and religious rituals.
- In East Asian Solar term, spring begins on 4 February and ends on 5 May. Similarly, according to the Celtic tradition, which is based solely on daylight and the strength of the noon sun, spring begins in early February and continues until early May.
- In normally snowless areas “spring” may begin as early as February (Northern Hemisphere) heralded by the blooming of deciduous magnolias, cherries, and quince, or August (Southern Hemisphere) in the same way.
- The name is from the Sumerian for “barley”, originally marking two festivals celebrating the beginning of each of the two half-years of the Sumerian calendar, marking the sowing of barley in autumn and the cutting of barley in spring, in the month of Nisannu (Aries).
- As a day of celebration the holiday has ancient origins, and it can relate to many customs that have survived into modern times.
- The lunar calendar is used mainly to divide the year into seasons for agriculture purposes.