Mandar Deru observes Ganesh Chaturthi on Monday, 14 September 2026, along with the rest of Bihar.
The idol is kept for one and a half, three, five, seven days or until Anant Chaturdashi — it is a family custom rather than a rule, and community mandapams usually keep it longest.
| Kept for | Immersion | |
|---|---|---|
| One and a half days | Tue, 15 Septembertoday | |
| Three days | Thu, 17 September | |
| Five days | Sat, 19 September | |
| Seven days | Mon, 21 September | |
| Anant Chaturdashi | Wed, 23 September | The day most community mandapams immerse |
Many gram panchayats and municipalities set aside a pond or a marked stretch of tank for immersion. Ask at the panchayat office — it changes year to year, and a drinking-water tank or a farm pond is not an alternative.
A clay idol breaks down in water within hours. Plaster of Paris does not, and the paints carry heavy metals, so idols accumulate in tanks and rivers after immersion. Pollution control boards in most states now ask for clay for exactly this reason.
Immersion points get crowded and the bank is slippery after the monsoon. Children go into the water at these gatherings every year. Keep one person watching the water rather than the procession.
Thermocol, plastic sheeting, cloth and metal ornaments do not belong in the tank even when the idol itself is clay. Most organised immersion points now have a collection bin at the bank for them.
By population, Mandar Deru ranks #105 of 222 villages in Dhuraiya mandal.
Source: Census of India 2011 (village PCA; mandal and district aggregates).
Mandar Deru is a village of 720 people in 144 households (Census 2011) in Dhuraiya block, Banka district, Bihar, the 105th-largest of 222 villages in Dhuraiya block. Literacy is 44%, 3 points below the block average of 47% and the sex ratio is 1,006 women per 1,000 men. The pincode is 812005, served by Mirjanhat post office; the LGD village code is 241110. The sarpanch is DINBANDHU DINANATH, and the village votes in Beldaur assembly constituency, represented by MLA Panna Lal Singh Patel. The population is estimated at 849 in 2026, up 18% since the 2011 Census.
Gram panchayat: Kurma →
| village | Population | Literacy | Distance |
|---|---|---|---|
| Mandar Deru · this village | 720 | 44% | — |
| Kurma · Dhuraiya | 5,490 | 40% | — |
| Phatu Chak · Dhuraiya | 2,036 | 44% | — |
| Dhuraia · Dhuraiya | 1,535 | 58% | — |
| Barkopderu · Dhuraiya | 850 | 69% | — |
Source: Census of India 2011, Village Directory. Facilities may have changed since.
Water supply timings, gram sabha dates, camps and drives — residents post them here and they expire on their own.
Sources: Office of the Registrar General & Census Commissioner of India (Census 2011 + Population Projections 2011-2036) · International Institute for Population Sciences (NFHS-5) · Election Commission of India · data.gov.in (Jal Jeevan Mission, PMAY-G, SBM-G dashboards). Projections may differ from on-the-ground reality by ±20% for individual villages. An asterisk next to a sex-ratio value (—*) flags a Census 2011 figure outside the plausible range of 300–2000 ♀/1000♂; the underlying source row is suppressed pending review.
Centred on Dhuraiya mandal
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