Tibet coin dating
According to Reza Assasi, the swastika is a geometric pattern in the sky representing the north ecliptic pole centred to Zeta Draconis.
He argues that this primitive astrological symbol was later called the four-horse chariot of Mithra in ancient Iran and represented the centre of Ecliptic in the star map and also demonstrates that in Iranian mythology, the cosmos was believed to be pulled by four heavenly horses revolving around a fixed centre on clockwise direction possibly because of a geocentric understanding of an astronomical phenomenon called axial precession.
Sagan suggests that in antiquity a comet could have approached so close to Earth that the jets of gas streaming from it, bent by the comet's rotation, became visible, leading to the adoption of the swastika as a symbol across the world.
Bob Kobres in his 1992 paper Comets and the Bronze Age Collapse contends that the swastika like comet on the Han Dynasty silk comet atlas was labeled a "long tailed pheasant star" (Di-Xing) because of its resemblance to a bird's foot or footprint, In Life's Other Secret (1999), Ian Stewart suggests the ubiquitous swastika pattern arises when parallel waves of neural activity sweep across the visual cortex during states of altered consciousness, producing a swirling swastika-like image, due to the way quadrants in the field of vision are mapped to opposite areas in the brain.
Schliemann linked his findings to the Sanskrit swastika. One distinct representation of a swastika, as a double swastika or swastika made of squares, appears in a Nepalese silver mohar coin of 1685, kingdom of Patan (NS 805) KM# 337 The left-facing version is distinguished in some traditions and languages as a distinct symbol from the right-facing "swastika", and is more correctly called the "sauwastika".
Investigators have also found seals with "mature and geometrically ordered" swatiskas which date from prior to the Indus Valley Civilization (3300–1300 BCE).
Their efforts have traced references to swastikas in the Vedas at about that time period.
A swastika generally takes the form of a rotationally symmetrical arrangement (a cross) with four equally spaced legs of identical length each bent at 90 degrees in a uniform direction to create a pattern akin to a four-armed spiral.
In Hinduism, the clockwise symbol is called swastika symbolizing surya (sun), prosperity, and good luck, while the counterclockwise symbol is called sauvastika symbolizing night or tantric aspects of Kali.