If people see the Sun moves north or south during sunrise and sunset, then it is just because the zigzag movement of the Earth as it moves around the Sun. That look is as follows:
On March 21, The Sun directly above the equator moving northward, and dated June 21 Sun reaches the point 23 1/2 degrees from the equator, a point on the circumference is called the Tropic of Cancer. At that moment occurred in the northern hemisphere's longest day, otherwise the longest night in the southern hemisphere. From June 21, The Sun started moving back toward the equator and directly above the equator on 21 September.
On September 22, The Sun continues to move from the equator to the south and got to the line called the Tropic of Capricon at a point 23 1/2 degrees from the equator the circumference of the Earth. When it was recorded on December 22 which occurred during the time the longest in the southern hemisphere and the longest night of the northern hemisphere. Furthermore The Sun moving back toward the equator of the Earth and arrive at the date of March 20 for subsequent seasons later.
The NEW YEAR starting from 1 Muharam(The Month's Name in Islamic Calendar/Lunar Year).
Qamariah Year or the Lunar Year on which the basis of Hijri calendar is the year that the time has never diminished. This can be understood if people willingly pay attention to the history and circumstances:
1. Earth's orbit around the Sun is not circular because the circle of this round will describe the distance between the Earth from the Sun is always the same throughout the year, when measured with the parallax system states as far as 90 million miles of Earth from the Sun, or 94 million miles. If a circular orbit of the Earth around the Sun will lack power, and sunspot activity on the surface of the Sun has remained stable, at the same time, always changes in the activity caused by the pull of the sun to planets that are sometimes close and sometimes distant.
2. Earth's orbit around the Sun is not circular or ellipse because this circle will form a two-point perihelion and two-point aphelion orbit. If this is true then the solarsystem will mess with consequences hard to predict. And with logical thinking, such orbits can not be happening in the pull beetwin The sun and the Earth, because every time the Earth is at perihelion point of its orbit, it must be pull to bend to the left a few degrees near the Sun.
3. Oval circular orbit is the only one who made by the Earth, has a perihelion is the point at which the Earth closest to the Sun while flying fast, and one point is aphelion farthest point from the Sun which Earth flying slow. With this Oval orbit are formed sustainable power, and the activity of sunspots which changed throughout the years to realize the weather changes on Earth.
Egg-shaped oval circle where there is a large arc with a point aphelion, and a small arc with the point of perihelion. When Earth is at perihelion point, the attraction is very strong with the Sun and the ocean waves at that time is looked bigger than usual, and begin Muharram as the first month of the Lunar Year. Because the Earth's position very serious, flying fast and the closest of the Sun.
Then the Earth began flying slower and slowest at aphelion point of the seventh month, the month of Rajab (The Month's Name in Islamic Calendar/Lunar Year) was also named the forbidden month because of the Earth farthest from the Sun in a serious condition.
After that the Earth began flying fast because it is pulled by the Sun until the eleventh month and more rapidly in the twelfth month, that month Zulhijah and Zulkaedah(The Month's Name in Islamic Calendar/Lunar Year), the closer to the Sun, then the two months were also called in forbidden month because in fact the Earth in a serious condition. On 29 Zulhijah, the Earth has completed one orbit 345 degrees, ie one year of the Lunar Year.
One time the Earth's orbit around the Sun rather than 360 degrees but 345 degrees of its path during 354 days 8 hours 48 minutes and 36 seconds. In one month of Qamariah(Islamic Calendar/Lunar Year), the Earth moves a distance 28 ˚ 45 'or in a single day as far as 0 degrees 58' 28,4''.
It should be noted that the Moon orbits around the Earth as far as 331 ˚ 15 ', during the 29 days 12 hours 44.04 minutes. It moved in one day as far as 11 ˚ 12 '. So around 360 ˚ - 331 ˚ 15 '= 28 ˚ 45' when multiplied by 12 months of Qamariah then one year of Islamic calendar is 354 days 8 hours 48 minutes and 36 seconds or 345 degrees of the Earth around the Sun.
For 360 degrees around the Sun, the Earth takes 370 days long. In the meantime one year season in the 20th century AD the Earth traveled as far as 355 ˚ 12 'for 365 days 6 hours. This can be evidenced by the delay in the stars in the sky at the same time every year as far as 4 ˚ 48 '.
So according to season, year or Solar Year, then the Earth moves around the Sun as far as 355 ˚ 12 'is 4 ˚ 48' before reaching the point full circle, then the 360 ˚ - 355 ˚ 12 '= 4 ˚ 48' multiplied by 75 years the season is 360 ˚ then the Earth is in first position at the beginning of year. When was the stars in the sky may be returned at a certain position at the same time with 75 years ago, because the Earth itself is not located at the perihelion point of point of its orbit begins.
However, when calculated by year of Hijrah, or the Lunar Year, The Earth began its orbit from perihelion on 1 Muharram, and moves 345 degrees around the Sun is 15 ˚ before reaching the point of a full 360 circle. After 24 years later, Earth was re-started at the position, which is 360 ˚ - 345 ˚ equal to 15 ˚ x 24 years = 360 ˚. It was every star in the sky to be back at a certain position along with its position at any given time 24 years ago, and Earth is also being returned to the perihelion point of its orbit begins.