HinduLab Trust Notes

Hindu Calendar and Vrat Sources

HinduLab separates calculation logic, textual tradition, regional practice, health caution, and editorial review so users can see what each page is claiming and what it is not claiming.

Sources and tradition

Why trust HinduLab?

Traditional Ekadashi observances are described in Vaishnava texts and regional vrat traditions. Practices vary across sampradaya, family lineage, and local temple guidance. This article presents a general Hindu household observance, with Vaishnava notes where applicable.

textual

Padma Purana, Uttara-khanda Ekadashi Mahatmya

Ekadashi Mahatmya chapters used in type-specific citation notes

Used for named Ekadashi kathas, devotional benefits, and observance context where a type page supplies chapter or verse detail.

tradition

Vaishnava and regional vrat traditions

Household, temple, and sampradaya practice

Used for practice framing such as family sampradaya, local temple guidance, and Smarta/Vaishnava distinctions.

calculation

HinduLab calculation methodology

Location-aware panchang, tithi, sunrise, and vrat timing rules

Explains how HinduLab combines astronomical calculations, Hindu calendar rules, city, timezone, sunrise, and sunset data.

editorial

HinduLab Hindu calendar and vrats source library

Editorial review, regional variation, and health disclaimer policies

Documents the trust policy used for panchang tools, vrat guides, Ekadashi rules, and health cautions.

editorial

Google Search Central

Helpful, reliable, people-first content and YMYL trust guidance

Used to frame health-related fasting content with extra sourcing, reviewer transparency, and people-first caution.

health

Nobel Prize in Physiology or Medicine 2016

Yoshinori Ohsumi and mechanisms for autophagy

Used only for the precise autophagy discovery reference, not as proof that a 24-hour religious fast creates assured clinical benefits.

health

Harvard T.H. Chan School of Public Health

Intermittent fasting benefits and risk cautions

Used for cautious language about possible benefits, diabetes medication guidance, and avoiding intermittent fasting during pregnancy or childhood.

health

Harvard Health Publishing

Intermittent fasting side effects and medication cautions

Used for warnings about severe calorie restriction, diabetes, blood pressure or heart medication, hydration, and medication-with-food concerns.

health

Mayo Clinic

Intermittent fasting safety cautions

Used for medically cautious fasting guidance and groups who should seek individualized clinical advice.

health

Johns Hopkins Medicine

Intermittent fasting overview and safety discussion

Used for general fasting safety framing and doctor-discussion guidance for medical conditions.

Panchang calculation method

Panchang pages use city, timezone, latitude, longitude, sunrise, sunset, and lunar element calculations to produce tithi, nakshatra, yoga, karana, muhurat, vrat, and festival timing context. Vrat pages use those computed values instead of treating dates as fixed globally.

Read the calculation methodology

Ekadashi observance rules

Ekadashi fasting dates are treated as observance dates, not only tithi labels. HinduLab checks local sunrise, tithi start and end, Dwadashi availability, Hari Vasara, paksha, lunar month, Adhik Maas, and tradition-specific variants where available.

Smarta vs Vaishnava distinction

Public Ekadashi calendar cards show Smarta-first dates by default and display Vaishnava alternates when the calculation returns a distinct observance. Users should follow their family sampradaya or local temple when that guidance differs.

Learn why Ekadashi dates differ

Regional variation policy

Hindu household practice varies by region, family lineage, temple calendar, and sampradaya. HinduLab presents a general household observance and flags Vaishnava, Adhik Maas, and source-confidence notes where the available data requires extra care.

Health disclaimer policy

Fasting guidance is devotional and informational, not medical advice. HinduLab recommends modified fasts for children, elders, pregnant or breastfeeding devotees, people with diabetes or eating-disorder history, and anyone whose medication, work, or health makes strict fasting unsafe.

Read Ekadashi health and fasting guidance

Editorial review process

Source notes are compiled by HinduLab Editorial Team. Pages are reviewed by HinduLab Editorial Team and revised when calculations, citations, route structure, or public guidance meaningfully changes.

Editorial author: HinduLab Editorial Team

Reviewer: HinduLab Editorial Team

Last reviewed: 2026-05-08