| Village | Hardhar |
| Block | Katoria |
| District | Banka |
| 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 | -18 minutes |
| Latitude | 24.88 |
| Longitude | 86.92 |
Hardhar is a village panchayat located in the Banka district of Bihar state,India. The latitude 24.88 and longitude 86.92 are the geocoordinate of the Hardhar.
The surrounding nearby villages and its distance from Hardhar are Jamdaha , Ghormara , Lakrama , Dewasi , Damodara , Katoria , Kathoun , Maniya , Badwasni , Basmatta , Bhorsar Bhelwa , Jaipur , Katiyari , Kolhasar , Mothawari .
The native language of Hardhar is Hindi,Urdu and most of the village people speak Hindi,Urdu. Hardhar people use Hindi,Urdu language for communication.
Hardhar village is located in the UTC 5.30 time zone and it follows indian standard time(IST). Hardhar sun rise time varies -18 minutes from IST. The vehicle driving side in Hardhar is left, all vehicles should take left side during driving. Hardhar people are using its national currency which is Indian Rupee and its internationl currency code is INR. Hardhar phones and mobiles can be accesed by adding the indian country dialing code +91 from abroad. Hardhar people are following the dd/mm/yyyy date format in day-to-day life. Hardhar domain name extension( cTLD) is .in .