Being a cultural student i was not aware of Nowruz, Thanks for this valuable information @ghasemkiani ;)

Today 2018-03-20, at exactly 16:15:28 GMT (19:45:28 IRST), the Earth passes the point in its orbit where the ecliptic longitude of the Sun is 0°. It is the so-called vernal equinox, or the beginning of Spring. This moment is the begininning of the Persian New Year, Nowruz. Nowruz is the most important holiday in Iranian culture.

Happy New Year Irani Brothers and Sisters :)