| Village | Harkhaili |
| Block | Dagraua |
| District | Purnia |
| State | Bihar |
| 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 | Hindi,Urdu |
| Time difference | -20 minutes |
| Latitude | 25.49 |
| Longitude | 87.31 |
Harkhaili is a village panchayat located in the Purnia district of Bihar state,India. The latitude 25.49 and longitude 87.31 are the geocoordinate of the Harkhaili.
The surrounding nearby villages and its distance from Harkhaili are Babhani , Kohila , Dagarua , Belgachhi , Rampur , Dubaili , Tauli , Dariyapur , Teghra , Adhkeli , Buwari , Chapi , Dagraua , Echalo , Majgama , Makeli , Mathor , Thathol .
The native language of Harkhaili is Hindi,Urdu and most of the village people speak Hindi,Urdu. Harkhaili people use Hindi,Urdu language for communication.
Harkhaili village is located in the UTC 5.30 time zone and it follows indian standard time(IST). Harkhaili sun rise time varies -20 minutes from IST. The vehicle driving side in Harkhaili is left, all vehicles should take left side during driving. Harkhaili people are using its national currency which is Indian Rupee and its internationl currency code is INR. Harkhaili phones and mobiles can be accesed by adding the indian country dialing code +91 from abroad. Harkhaili people are following the dd/mm/yyyy date format in day-to-day life. Harkhaili domain name extension( cTLD) is .in .