
Samay

In Sanskrit, Samay (समय) is the, "appointed or proper time, [the] right "moment" for doing anything." On a general parlance, "samay" is a unit of time. The samay chakra is the great chariot wheel of time which turns relentlessly forward.
Meaning.
In current usage, "samay" means "time" in Indian languages such as Bengali, Hindi, Marathi, Gujurati.
In Jainism.
Meaning.
Samay represents the most infinitesimal part of time that cannot be divided further. The blink of an eye, or about a quarter of a second, has innumerable "samay" in it. For all practical purposes a second happens to be the finest measurement of time. Jainism however, recognizes a very small measurement of time known as "samay", which is an infinitely small part of a second.
Measurements.
The following are measurements of time as adopted by Jainism: Indivisible time = 1 samay <br>
Innumerable samay = 1 "avalik" <br> 16,777,216 avalik = 1 Muhurt <br>
30 Muhurtas = 1 day and night <br>
15 days and nights = 1 Paksha (fortnight) <br> 
2 Pakshas = 1 Month <br>
12 Months = 1 Year <br>
Innumerable years = 1 Palyopam <br>
10 millionn millions of Palyopams = 1 Sāgaropam <br>
10 millio millions of Sāgaropams = l Utsarpini or 1 Avasarpini <br>
1 Utsarpini + Avasarpini = 1 "Kālchakra" (One time cycle).
Example.
When an Arihant reaches the stage of moksha (liberation), the soul travels to the Siddhashila (highest realm in universe) in one "samay".
In Hinduism.
"Samay" was the basic unit of time in ancient Hindu mythology. Currently, it is used synonymously with time.
Samay in music.
"Samay" is a term used in Indian classical music to loosely categorize ragas into times of day. Each "raga" has a specific period of the day (prahar) when it is performed.
In Gandharva-Veda the day is divided into three-hour-long intervals: 4-7 a.m., 7-10 a.m. etc. The time concept in Gandharva-Veda is more strictly adhered to than it would be, for example, in Carnatic music.