Onam 2027: date, rule and meaning
Onam (Thiruvonam) 2027 is on Sunday, September 12 in Washington DC, the same day as in India (New Delhi).
- Washington DC
12SundaySeptember 2027
Computed for this city. Malayali rule.
The same date in India (New Delhi).
How the date is decided
In Washington DC: Shravana 5:29 PM, 11 Sep to 8:35 PM; sunrise 6:46 AM
The day in the Malayalam month Chingam (Sun in Simha) on which Thiruvonam (Shravana) nakshatra prevails at sunrise. If Thiruvonam comes twice in Chingam, the later day.
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Happy Onam Onam (Thiruvonam) 2027 Washington DC: Sunday 12 September 2027 Malayali rule. Each city's date follows its own sunset and time zone. Neither is wrong. https://pujadeep.com/festivals/onam/2027/?s=copy
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Onam 2027 in each city
US
| City | Date | Times that decide it | Also |
|---|---|---|---|
| New York | Sun, Sep 12 | Shravana 5:29 PM, 11 Sep to 8:35 PM; sunrise 6:33 AM | – |
| Edison, NJ | Sun, Sep 12 | Shravana 5:29 PM, 11 Sep to 8:35 PM; sunrise 6:35 AM | – |
| Washington DC | Sun, Sep 12 | Shravana 5:29 PM, 11 Sep to 8:35 PM; sunrise 6:46 AM | – |
| Atlanta | Sun, Sep 12 | Shravana 5:29 PM, 11 Sep to 8:35 PM; sunrise 7:18 AM | – |
| Boston | Sun, Sep 12 | Shravana 5:29 PM, 11 Sep to 8:35 PM; sunrise 6:20 AM | – |
| Philadelphia | Sun, Sep 12 | Shravana 5:29 PM, 11 Sep to 8:35 PM; sunrise 6:38 AM | – |
| Chicago | Sun, Sep 12 | Shravana 4:29 PM, 11 Sep to 7:35 PM; sunrise 6:27 AM | – |
| Houston | Sun, Sep 12 | Shravana 4:29 PM, 11 Sep to 7:35 PM; sunrise 7:04 AM | – |
| Dallas | Sun, Sep 12 | Shravana 4:29 PM, 11 Sep to 7:35 PM; sunrise 7:08 AM | – |
| Los Angeles | Sun, Sep 12 | Shravana 2:29 PM, 11 Sep to 5:35 PM; sunrise 6:34 AM | – |
| San Jose, CA | Sun, Sep 12 | Shravana 2:29 PM, 11 Sep to 5:35 PM; sunrise 6:47 AM | – |
| Seattle | Sun, Sep 12 | Shravana 2:29 PM, 11 Sep to 5:35 PM; sunrise 6:42 AM | – |
UK
| City | Date | Times that decide it | Also |
|---|---|---|---|
| London | Sun, Sep 12 | Shravana 10:29 PM, 11 Sep to 1:35 AM, 13 Sep; sunrise 6:30 AM | – |
| Birmingham, UK | Sun, Sep 12 | Shravana 10:29 PM, 11 Sep to 1:35 AM, 13 Sep; sunrise 6:36 AM | – |
| Leicester | Sun, Sep 12 | Shravana 10:29 PM, 11 Sep to 1:35 AM, 13 Sep; sunrise 6:33 AM | – |
| Manchester | Sun, Sep 12 | Shravana 10:29 PM, 11 Sep to 1:35 AM, 13 Sep; sunrise 6:36 AM | – |
Canada
| City | Date | Times that decide it | Also |
|---|---|---|---|
| Toronto | Sun, Sep 12 | Shravana 5:29 PM, 11 Sep to 8:35 PM; sunrise 6:53 AM | – |
| Brampton | Sun, Sep 12 | Shravana 5:29 PM, 11 Sep to 8:35 PM; sunrise 6:54 AM | – |
| Vancouver | Sun, Sep 12 | Shravana 2:29 PM, 11 Sep to 5:35 PM; sunrise 6:44 AM | – |
| Calgary | Sun, Sep 12 | Shravana 3:29 PM, 11 Sep to 6:35 PM; sunrise 7:06 AM | – |
Australia
| City | Date | Times that decide it | Also |
|---|---|---|---|
| Sydney | Mon, Sep 13 | Shravana 7:29 AM, 12 Sep to 10:35 AM; sunrise 5:58 AM | In India (New Delhi): Sun, Sep 12 |
| Melbourne | Mon, Sep 13 | Shravana 7:29 AM, 12 Sep to 10:35 AM; sunrise 6:24 AM | In India (New Delhi): Sun, Sep 12 |
| Brisbane | Mon, Sep 13 | Shravana 7:29 AM, 12 Sep to 10:35 AM; sunrise 5:48 AM | In India (New Delhi): Sun, Sep 12 |
| Perth | Sun, Sep 12 | Shravana 5:29 AM to 8:35 AM, 13 Sep; sunrise 6:20 AM | – |
India
| City | Date | Times that decide it | Also |
|---|---|---|---|
| New Delhi | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 6:04 AM Close call | – |
| Mumbai | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 6:25 AM | – |
| Kolkata | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 5:22 AM | – |
| Chennai | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 5:58 AM | – |
| Bengaluru | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 6:08 AM Close call | – |
| Hyderabad | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 6:03 AM Close call | – |
| Ahmedabad | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 6:25 AM | – |
| Surat | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 6:24 AM | – |
| Pune | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 6:21 AM | – |
| Jaipur | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 6:10 AM | – |
| Lucknow | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 5:50 AM | – |
| Varanasi | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 5:42 AM | – |
| Patna | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 5:33 AM | – |
| Chandigarh | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 6:05 AM Close call | – |
| Bhopal | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 6:05 AM Close call | – |
| Thiruvananthapuram | Sun, Sep 12 | Shravana 2:59 AM to 6:05 AM, 13 Sep; sunrise 6:12 AM | – |
About the festival
Onam is Kerala's great harvest festival, kept in the Malayalam month of Chingam, after the monsoon rains, when the fields are full and flowers are everywhere. Its high point is Thiruvonam, the day of the Thiruvonam (Shravana) nakshatra.
AI-drafted, reviewed. Written for this app with AI help and checked against the sources listed. See the sources
Questions families ask
When is Onam 2028?
The date moves with the Hindu calendar. In 2028, Onam is on Friday, September 1, 2028 in Washington DC.
How is the date found for my city?
Each city’s date is computed for that city, from its own sunrise and sunset and the times the tithi begins and ends, with the rule named below. Find your city in the table above.
Which rule sets the date of Onam?
The day in the Malayalam month Chingam (Sun in Simha) on which Thiruvonam (Shravana) nakshatra prevails at sunrise. If Thiruvonam comes twice in Chingam, the later day. How we compute dates
The rule and its sources
Tradition: Malayali.
- Kerala almanacs may also require the nakshatra to last a minimum time after sunrise; the engine uses the sunrise nakshatra.
Rule sources
- Wikipedia: Onam
- Dershowitz & Reingold, Indian Calendrical Calculations (§4 solar critical times, §8 festival rules, citing Kielhorn 1897)
- Rashtriya Panchang (India Meteorological Department, Positional Astronomy Centre, Kolkata), Saka 1942 and 1944-1948: festival dates compared in Gate G1 (tools/g1/rp)
Related
Computed for 40 cities on Sunday, September 12, 2027
Rule: The day in the Malayalam month Chingam (Sun in Simha) on which Thiruvonam (Shravana) nakshatra prevails at sunrise. If Thiruvonam comes twice in Chingam, the later day.
Calculated for your location from NASA JPL's DE440 ephemeris and Astronomy Engine (MIT licence), with the Lahiri ayanamsa. Times can differ by a minute or two from printed panchangs. For vrat and puja timings, follow your family or temple tradition.
Source and licence
- Our explanation
- Explanation written for this site with AI help from the sources listed here, and reviewed. It is not a translation and not the only way to read the text. Free to quote with credit.
- Review
- AI review: 2 independent reviews against the cited edition, October 12, 2026.
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