| Village | Grantlyon |
| Block | Pulal |
| District | Thiruvallur |
| State | Tamil Nadu |
| Country | India |
| Continent | Asia |
| Time Zone | IST ( UTC + 05:30) |
| Currency | Indian Rupee ( INR ) |
| Dialing Code | +91 |
| Date format | dd/mm/yyyy |
| Driving side | left |
| Internet cTLD | in |
| Language | Tamil |
| Time difference | 10 minutes |
| Latitude | 13.1154254 |
| Longitude | 79.9130058 |
Grantlyon is a village panchayat located in the Thiruvallur district of Tamil-Nadu state,India. The latitude 13.1154254 and longitude 79.9130058 are the geocoordinate of the Grantlyon.
The surrounding nearby villages and its distance from Grantlyon are Vadagarai , Azhinjivakkam , Vilangadupakkam , Sadayankuppam , Soorapattu , Pulal , Kadapakkam , Mathur , Puthagaram , Kadhirvedu , Pullilyon , Sendrampakkam , Theerthakariampattu , Theeyampakkam , Vadaperumpakkam .
The native language of Grantlyon is Tamil and most of the village people speak Tamil. Grantlyon people use Tamil language for communication.
Grantlyon village is located in the UTC 5.30 time zone and it follows indian standard time(IST). Grantlyon sun rise time varies 10 minutes from IST. The vehicle driving side in Grantlyon is left, all vehicles should take left side during driving. Grantlyon people are using its national currency which is Indian Rupee and its internationl currency code is INR. Grantlyon phones and mobiles can be accesed by adding the indian country dialing code +91 from abroad. Grantlyon people are following the dd/mm/yyyy date format in day-to-day life. Grantlyon domain name extension( cTLD) is .in .