ą“Ŗą“ą“²ąµą“ ą“°ą“¾ą“¤ąµą“°ą“æą“Æąµą“ Ernakulam Ā· UTC+5:30
š
ą“ą“¦ą“Æą“
06:13
š
ą“
ą“øąµą“¤ą“®ą“Æą“
19:10
š
ą“ą“Øąµą“¦ąµą“°ąµą“¦ą“Æą“
07:02
š
ą“ą“Øąµą“¦ąµą“°ą“¾ą“øąµą“¤ą“®ą“Æą“
19:48
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Pratipada ā
ą“Øą“ąµą“·ą“¤ąµą“°ą“ą“¤ą“¾ą“°ą“¾ą“ą“£ą“
Krittika Ā· Pada 3 ā
ą“Æąµą“ą“ą“øąµą“°ąµą“Æ-ą“ą“Øąµą“¦ąµą“°
Siddha ā
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Bava ā
ą“µą“¾ą“°ą“ą“ą““ąµą“
Shukravara ā
ą“Ŗą“ąµą“·ą“ą“ą“¾ą“Øąµą“¦ąµą“°ą“Ŗą“ąµą“·ą“
Shukla ā
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ą“ą“Øąµą“¦ąµą“°ą“°ą“¾ą“¶ą“æVrishabha ā
ą“øąµą“°ąµą“Æą“°ą“¾ą“¶ą“æMesha ā
ą“Øą“ąµą“·ą“¤ąµą“°ą“¾ą“§ą“æą“Ŗąµ»Sun
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ā
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ą“µąµą“³ąµą“³ą“æ Ā· 2026 ą“®ąµą“Æąµ 8 Ā· 06:13 Ā· ą“øą“æą“ą“ą“Ŗąµą“Ŗąµąµ¼ (1Ā°17ā²N, 103Ā°51ā²E)
ą“ąµą“°ą“¹ą“øąµą“„ą“¾ą“Øą“ąµą“ąµ¾ ą“Øą“æą“°ą“Æą“Ø Ā· ą“²ą“¾ą“¹ą“æą“°ą“æ ą“ ą“Æą“Øą“¾ą“ą“¶ą“
| ą“ąµą“°ą“¹ą“ | ą“°ą“¾ą“¶ą“æ | ą“”ą“æą“ąµą“°ą“æ | ą“ ą“µą“øąµą“„ | |
|---|---|---|---|---|
| ą“ąµą“°ą“¹ą“øąµą“„ą“¾ą“Øą“ąµą“ąµ¾ ą“²ąµą“”ąµ ą“ąµą“Æąµą“Æąµą“Øąµą“Øąµā¦ | ||||
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2026 ą“®ąµą“Æąµ Ā· ą“µąµą“¶ą“¾ą“ą“
ą“ą“¤ąµą“øą“µą“
ą“ą“ą“¾ą“¦ą“¶ą“æ / ą“µąµą“°ą“¤ą“
ą“ą“Øąµą“Øąµ
ą“ą“Ŗąµą“Ŗąµą““ą“¤ąµą“¤ąµ ą“ą“ą“æą“ą“Æąµą“ ą“µą“æą“Øą“¾ą““ą“æą“ą“Æąµą“ ą“ą“¦ą“Æą“ ą“®ąµą“¤ąµ½ ą“¤ą“¤ąµą“øą“®ą“Æą“
34 ą“ 22 ą“µą“æ
1 ą“ą“ą“æą“ ā 24 ą“®ą“æą“Øą“æą“±ąµą“±ąµĀ·1 ą“µą“æą“Øą“¾ą““ą“æą“ ā 24 ą“øąµą“ąµą“ąµ»ą“”ąµ
ą“¤ą“¤ąµą“øą“®ą“Æą“
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| ą“øą“ą“µą“¤ąµą“øą“°ą“60-ą“µąµ¼ą“· ą“ą“ąµą“°ą“ | ā |
| ą“ ą“Æą“Øą“ą“øąµą“° ą“ ąµ¼ą“§ą“µąµ¼ą“·ą“ | ā |
| ą“ą“¤ąµą“ą“¾ą“²ą“ | ā |
| ą“®ą“¾ą“øą“ą“ą“¾ą“Øąµą“¦ąµą“°ą“®ą“¾ą“øą“ | ā |
| ą“Ŗą“ąµą“·ą“ą“Ŗą“ąµą“·ą“ | ā |
| ą“µą“æą“ąµą“°ą“® ą“øą“ą“µą“¤ąµą“¶ą“ą“ | 2083 |
| ą“¶ą“ ą“øą“ą“µą“¤ąµą“¶ą“ą“ | 1948 |
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ā
ā
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ą“¤ą“æą“„ą“æ ą“Ŗąµą“°ąµą“ą“¤ą“æ ā
62% ą“Ŗą“æą“Øąµą“Øą“æą“ąµą“ąµ
ā
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System Architecture
End-to-end view of how a date + lat/lon request flows from the user, through the API gateway and compute layer, down to public-domain ephemeris sources, and back as a Panchang JSON document.
Request & Data FlowUser ā Frontend ā API ā Compute ā Sources
Tech StackLayer by layer
Frontend
React 18
TypeScript
Vite
Service Worker
API
Node Ā· Fastify
OpenAPI 3.1
JWT
Rate-limit
Compute
Python Ā· FastAPI
pyswisseph
astropy
NumPy
Storage
PostgreSQL 16
PostGIS
Redis 7
S3 (ephemeris bins)
Search
OpenSearch
Devanagari analyzer
Infra
Docker
k8s / Fly.io
GitHub Actions
Cloudflare CDN
Component Treesrc/
apps/web/ āāā routes/ ā āāā Today.tsx # Panchang dashboard ā āāā Detail.tsx # Tithi / Nakshatra detail ā āāā Calendar.tsx # Monthly festivals ā āāā Kundali.tsx # Lagna chart ā āāā Search.tsx āāā components/ ā āāā PanchaAngas.tsx # 5-limbs card ā āāā DayArc.tsx # Sun/moon arc SVG ā āāā MuhurtaGrid.tsx ā āāā PlanetStrip.tsx ā āāā NorthChart.tsx # Diamond SVG ā āāā FestivalCard.tsx āāā lib/ ā āāā api.ts # typed client ā āāā geo.ts # geolocation + tz ā āāā i18n.ts # sa/hi/en/ta/te/ml āāā main.tsx services/compute/ āāā engine.py # orchestrator āāā panchang/ ā āāā tithi.py ā āāā nakshatra.py ā āāā yoga.py ā āāā karana.py ā āāā muhurta.py āāā astro/ ā āāā swisseph_wrapper.py ā āāā sunrise.py # USNO SPA ā āāā ayanamsa.py # Lahiri default āāā festivals/ āāā rules.json āāā resolver.py
Data Pipeline & Computation
Every value rendered in the Panchang tab is computed at request time from four open sources. No commercial almanac text is ingested ā only longitudes, sunrise times, and public-domain rules.
SE
Swiss Ephemeris
- Role
- Primary source for Sun & Moon ecliptic longitudes, planetary positions, ayanamsa.
- License
- AGPL / Open-source mode
- Access
pyswissephbinding Ā· binary.se1files on local disk- Cadence
- Sub-millisecond at request time
- Output
- Ī»_sun, Ī»_moon (sidereal, Lahiri), planet longitudes & speeds
JPL
NASA JPL Horizons
- Role
- Cross-validation of planetary positions; high-precision DE441 ephemeris reference.
- License
- U.S. Govt Ā· Public domain
- Access
- REST API Ā· batched nightly for next 30 days
- Cadence
- Nightly cron Ā· cached
- Output
- RA/Dec ā ecliptic Ī»/Ī² Ā· used to flag SE drift > 0.01Ā°
US
USNO Sunrise/Sunset
- Role
- Local sunrise, sunset, twilight times ā anchor for tithi/nakshatra at sunrise.
- License
- U.S. Govt Ā· Public domain
- Access
- Re-implemented from published SPA paper (Reda & Andreas, NREL)
- Cadence
- Computed per request from lat/lon/date
- Output
- Sunrise, sunset, solar noon, civil twilight
JM
Meeus Algorithms
- Role
- Julian Date conversion, ĪT, Lahiri ayanamsa, lunar phase calculation.
- License
- Public-domain formulas
- Access
- Implemented inline in
astro/meeus.py - Cadence
- Inline at request time
- Output
- JD ā Gregorian, ĪT correction, ayanamsa offset
Computation RulesStandard open formulas
Tithi
ā (Ī»_moon ā Ī»_sun) mod 360 / 12 ā + 1
1ā¦30 Ā· 1ā15 Shukla, 16ā30 Krishna
Nakshatra
ā Ī»_moon / 13.3333 ā + 1
27 asterisms Ā· pada = (Ī» mod 13.333) / 3.333
Yoga
ā (Ī»_sun + Ī»_moon) mod 360 / 13.3333 ā + 1
27 yogas Ā· sum-based solarālunar
Karana
tithi Ć 2 ā {0 if first half else 1}
60 half-tithi segments Ā· 11 names cycled
Paksha
tithi ā¤ 15 ? Shukla : Krishna
Waxing or waning fortnight
Rahu Kalam
day_length / 8 Ā· weekday_offset
Standard weekday table Ā· 7 fixed slots
Abhijit
solar_noon Ā± 24 min
~48-min window centred on local noon
Amrit Kalam
f(nakshatra_pada, weekday)
From Vedic Nakshatra lookup table
engine.py Ā· main loopPseudocode
def compute_panchang(date, lat, lon, tz):
jd = meeus.jd_from_date(date, tz)
sunrise = spa.sunrise(jd, lat, lon) # USNO SPA
# Anchor: tithi at sunrise (Indian convention)
jd_anchor = meeus.jd_from_datetime(sunrise)
ayan = meeus.lahiri_ayanamsa(jd_anchor)
# Swiss Ephemeris ā sidereal longitudes
lam_sun = swe.calc_ut(jd_anchor, swe.SUN)[0] - ayan
lam_moon = swe.calc_ut(jd_anchor, swe.MOON)[0] - ayan
tithi = int(((lam_moon - lam_sun) % 360) / 12) + 1
naksh = int(lam_moon / 13.3333) + 1
yoga = int(((lam_sun + lam_moon) % 360) / 13.3333) + 1
karana = karana_from_tithi(tithi, half=half_of_tithi(lam_sun, lam_moon))
# Festivals ā pure rule resolver, no copyrighted text
fests = festivals.resolve(tithi, naksh, masa, paksha, region)
return PanchangDay(...)
Ingestion & CronDaily 00:30 UTC pre-warm
1
Trigger
k8s CronJob fires
00:30 UTC daily
ā
2
Fetch JPL
Pull next 30 days planetary positions
~12s Ā· 9 bodies
ā
3
Compute
SE + Meeus run for top-50 cities
~90s parallel
ā
4
Validate
SE vs JPL diff < 0.01Ā° gate
< 1s Ā· alert on fail
5
Cache warm
Write to Redis Ā· 24h TTL keyed by date+lat+lon bucket
~5s
ā
6
Index
OpenSearch festivals + tithi/nakshatra fields refreshed
~3s
ā
7
Notify
Push Ekadashi / festival reminders to subscribed users
batched
Database Schema
PostgreSQL 16 ā normalised reference tables for tithi/nakshatra/yoga/karana, a wide panchang_day fact table for fast dashboard reads, and a rules-based festival_rules resolver. PostGIS for location.
API & Sample Responses
REST Ā· OpenAPI 3.1 Ā· all timestamps ISO-8601 in UTC with local-offset preserved. Click any endpoint to expand its parameter table and a sample JSON response.
Style Guide
Traditional Panchangam palette grounded in saffron, maroon, and gold ā softened on a parchment background. Cormorant Garamond for headings, DM Sans for UI, JetBrains Mono for numerals, Tiro Devanagari for vernacular text.
Color TokensBrand & semantic
Saffron
Maroon
Gold
Indigo
Emerald
Orange
Parchment
Cream
Ink
Rule
TypographyRoles & usage
Display Ā· Cormorant Garamond
Shukravara Ā· Vaishakha Shukla Pratipada
Heading Ā· Cormorant Garamond
Pancha Angas Ā· Five Limbs
Krittika Ā· Pada 3 Ā· upto 22:18
Body Ā· DM Sans
Akshaya Tritiya brings unexpected gains. Begin new ventures before noon. Donate yellow rice and turmeric at a Vishnu shrine.
Numerals Ā· JetBrains Mono
06:13 Ā· 19:10 Ā· 11:48
Vernacular Ā· Tiro Devanagari Hindi
ą¤¶ą„ą¤ą„ą¤°ą¤µą¤¾ą¤° Ā· ą¤µą„ą¤¶ą¤¾ą¤ ą¤¶ą„ą¤ą„ą¤² ą¤Ŗą„ą¤°ą¤¤ą¤æą¤Ŗą¤¦ą¤¾
Caption Ā· DM Sans uppercase
Shukla Paksha Ā· Uttarayana Ā· Grishma Ritu
ComponentsCore building blocks
Badges
Shukla Paksha
Uttarayana
Grishma Ritu
Pills
Yoga chips
Sarvartha Siddhi
Amrit Siddhi
Gajakesari
Status dots
Auspicious
Inauspicious
Toggle
Spacing
4
8
12
16
24
32
Radius
4
8
10
pill
š
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