| Village | Harnahalli |
| Block | Arsikere |
| District | Hassan |
| State | Karnataka |
| 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 | Kannada, English |
| Time difference | 25 minutes |
| Latitude | 12.926603 |
| Longitude | 76.0182023 |
Harnahalli is a village panchayat located in the Hassan district of Karnataka state,India. The latitude 12.926603 and longitude 76.0182023 are the geocoordinate of the Harnahalli.
The surrounding nearby villages and its distance from Harnahalli are Bagivalu , Mududi , Murundi , Javagal , Dummenahalli , Arsikere , Bendekere , Kamasamudra , Madalu , Rangapura , Kanakatte , Kenkere , Rampura , Chogachagere , Lalanakere , Kondenalu , Gandasi , Heggatta , Habbanaghatta , Kalyadi , Karagunda , Undiganalu , Thalalur , Bandur , Geejihalli , Aggunda , Nerlige , Puralehalli , Kuruvanka , Jayachamarajapura , Banavara , Kallugundi , Shankaranahalli , Bageshpura , Yadavanahalli , Narasipura , Handralu , Kolagunda , Kachighatta , Shanegere , Doddametikurke , Arakere , Belagumba , Hiriyur , Jajur .
The native language of Harnahalli is Kannada, English and most of the village people speak Kannada, English. Harnahalli people use Kannada, English language for communication.
Harnahalli village is located in the UTC 5.30 time zone and it follows indian standard time(IST). Harnahalli sun rise time varies 25 minutes from IST. The vehicle driving side in Harnahalli is left, all vehicles should take left side during driving. Harnahalli people are using its national currency which is Indian Rupee and its internationl currency code is INR. Harnahalli phones and mobiles can be accesed by adding the indian country dialing code +91 from abroad. Harnahalli people are following the dd/mm/yyyy date format in day-to-day life. Harnahalli domain name extension( cTLD) is .in .