| Village | Onnalvadi |
| Block | Hosur |
| District | Krishnagiri |
| 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 | 8 minutes |
| Latitude | 13.0938995 |
| Longitude | 80.292356 |
Onnalvadi is a village panchayat located in the Krishnagiri district of Tamil-Nadu state,India. The latitude 13.0938995 and longitude 80.292356 are the geocoordinate of the Onnalvadi.
The native language of Onnalvadi is Tamil and most of the village people speak Tamil. Onnalvadi people use Tamil language for communication.
Onnalvadi village is located in the UTC 5.30 time zone and it follows indian standard time(IST). Onnalvadi sun rise time varies 8 minutes from IST. The vehicle driving side in Onnalvadi is left, all vehicles should take left side during driving. Onnalvadi people are using its national currency which is Indian Rupee and its internationl currency code is INR. Onnalvadi phones and mobiles can be accesed by adding the indian country dialing code +91 from abroad. Onnalvadi people are following the dd/mm/yyyy date format in day-to-day life. Onnalvadi domain name extension( cTLD) is .in .