| Village | Derwan |
| Block | Kudra |
| District | Kaimur |
| 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 | -11 minutes |
| Latitude | 25.62 |
| Longitude | 85.13 |
Derwan is a village panchayat located in the Kaimur district of Bihar state,India. The latitude 25.62 and longitude 85.13 are the geocoordinate of the Derwan.
The surrounding nearby villages and its distance from Derwan are Kudra , Bahera , Bhadaola , Chilbili , Deorarh Kala Khurd , Ghataon , Jahanabad , Kharahna , Meura , Neoras , Pachpokhari , Sakri , Salathua , Sasna , Siswar .
The native language of Derwan is Hindi,Urdu and most of the village people speak Hindi,Urdu. Derwan people use Hindi,Urdu language for communication.
Derwan village is located in the UTC 5.30 time zone and it follows indian standard time(IST). Derwan sun rise time varies -11 minutes from IST. The vehicle driving side in Derwan is left, all vehicles should take left side during driving. Derwan people are using its national currency which is Indian Rupee and its internationl currency code is INR. Derwan phones and mobiles can be accesed by adding the indian country dialing code +91 from abroad. Derwan people are following the dd/mm/yyyy date format in day-to-day life. Derwan domain name extension( cTLD) is .in .