Tarwan 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 September | |
| 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, Tarwan ranks #34 of 65 villages in Hasanpura mandal.
Source: Census of India 2011 (village PCA; mandal and district aggregates).
Tarwan is a village of 1,727 people in 274 households (Census 2011) in Hasanpura block, Siwan district, Bihar, the 34th-largest of 65 villages in Hasanpura block. Literacy is 59%, 2 points above the block average of 57% and the sex ratio is 1,137 women per 1,000 men. The pincode is 841240, served by Mahuwal Mahal post office; the LGD village code is 232586. The sarpanch is NIRAJ KUMAR SINGH, and the village votes in Paroo assembly constituency, represented by MLA Shankar Prasad. The population is estimated at 2,036 in 2026, up 18% since the 2011 Census.
Gram panchayat: Harpur Kotwa →
| village | Population | Literacy | Distance |
|---|---|---|---|
| Tarwan · this village | 1,727 | 59% | — |
| Harpur Kotwa · Hasanpura | 1,943 | 55% | — |
| Chandparsa · Hasanpura | 1,413 | 56% | — |
| Parsa Harnatanr · Hasanpura | 1,018 | 57% | — |
| Pasiwarh · Hasanpura | 934 | 61% | — |
| Madhwapur · Hasanpura | 450 | 45% | — |
| Mathia Bachangir · Hasanpura | 446 | 59% | — |
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.
Looking for a different Tarwan? The largest eight this name across India. All villages named Tarwan →
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 Hasanpura mandal
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