The Short Version
A festival calendar API helps applications show festivals, vrats, lunar events, and regional observances without hard-coding annual dates by hand. The useful result is not just a name and date; it is an observance resolved through calendar rules, location context, and supported tradition settings.
DevDarsha is designed for products that need festival data alongside daily Panchang elements, muhurat windows, and metadata that explains the convention behind the response.
What Festival Data Supports
- Calendar apps: upcoming festival lists, day detail pages, reminder screens, and annual views.
- Devotional platforms: vrat reminders, puja planning, temple schedules, and observance-aware content.
- Regional content sites: editorial calendars, festival explainers, and localized seasonal pages.
- Astrology products: festival context next to Tithi, Nakshatra, Muhurat, and daily Panchang fields.
If another Panchang source shows a different festival date, first compare calendar system, ayanamsa, location, timezone, and regional observance rule before treating it as an error.
Regional Rules and Source Differences
Festival dates can depend on Tithi, Nakshatra, solar ingress, regional rulebooks, and sunrise or observance windows. Different publishers may choose different conventions, especially across Purnimanta and Amanta traditions or region-specific observances.
DevDarsha v1.0 documents its active conventions in response metadata. Known differences should be handled as explainable calendar behavior rather than hidden behind a generic "correct" or "incorrect" label.
Choosing Daily, Monthly, or Yearly
Use daily responses when your product is centered on a single date detail page. Use monthly responses for calendar grids, upcoming lists, and content planning. Use yearly responses when the product needs annual festival views or precomputed editorial schedules.
Yearly calls have a higher quota cost, so they are best used intentionally, cached in your own backend where appropriate, and refreshed on a schedule that matches your product's needs.
Plan Gates to Know
Feature access depends on plan. Daily Panchang is available across plans. Monthly Panchang, Muhurat timings, core festivals, and faith filters begin on paid tiers. Yearly Panchang, all festival layers, regional festivals, and eclipse data require higher plan access.
Your UI should handle plan-filtered fields gracefully. If a field is not available to the current plan, do not present it as missing data from the calendar; route users toward the appropriate plan or hide that feature until eligible.
Festival data is sensitive to user trust. Show resolved location, date, and relevant convention context where it helps, especially when users compare your app with another Panchang source.
Testing Festival Workflows
Before launch, test major observances, regional festivals, and ordinary dates. Include known high-attention festivals such as Holi, Diwali, Dussehra, Makar Sankranti, Ganesh Chaturthi, Navratri, and Ekadashi flows if your product displays them.
- Test one-day and multi-day festival display states.
- Confirm how vrats and observances appear in daily and calendar views.
- Check plan-gated behavior for monthly, yearly, regional, and all-layer festival data.
- Store request IDs when collecting mismatch reports from users or editors.
Before You Go Live
For user-facing festival experiences, write support copy that explains why Panchang sources can differ. For high-risk public communications, cross-verify against a regional Panchang authority before publishing final dates.