Why a festival date abroad can differ from India
A practical guide to choosing your local festival calendar, understanding a tithi and checking your temple's tradition.
By Golden Kundli ยท Updated 2026-10-07
The short answer: Use the calendar for the place where you will observe the festival, then check the tradition your family follows.
1. Start with your city, not a forwarded date
A family message from India is a lovely reminder, but it may not be the right local date for you. First ask: Where will I keep this observance? Toronto, Calgary and Delhi should not be treated as the same place. A time zone also covers a wide area; the named city and its coordinates matter for local sunrise and sunset.
Golden Kundli's city calendars show the city centre and time zone used. They calculate dates with our local engine. They are not temple-certified almanacs, and nearby locations or different traditions may produce a different observance. For an important fast or ceremony, confirm with your own temple before making arrangements.
2. A tithi is not a midnight-to-midnight day
A tithi is a lunar-calendar interval based on the changing angular separation of the Moon and Sun. Its boundary can fall partway through a civil day. Simply moving an Indian date backwards by a fixed number of hours does not reliably decide the observance date.
The rule for choosing a festival's day is a separate religious-calendar question. Different observances look at different parts of the day, and communities may follow different rules. A general Moon-phase table gives astronomical context; it does not by itself tell you when to observe Ekadashi or Janmashtami.
3. Read the labels before setting a reminder
Check the location, the local calendar date and any stated breaking-of-fast window. Paran means the time for breaking a fast according to the rule used. Do not assume that a displayed time belongs to the same civil date as the start of the fast; our city pages label the Paran date explicitly.
You can download a calendar file and choose to add it to your phone. It contains local all-day dates and a day-before reminder. Your calendar controls notifications. It is a downloaded snapshot, not a subscription that silently updates itself; download a new copy later for fresh dates.
Your quick checklist
- Choose the city where you will observe.
- Read the local date and any Paran date/time together.
- Ask your temple which tradition and rule it follows.
- Treat fasting as a personal choice; do not ignore health needs.
- Tell relatives which city's calendar you are sharing.
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Sources and what they support
These sources support the technical explanations stated below. They do not endorse Golden Kundli, religious observance rules or predictive astrology.
- IANA โ Time Zone Database
Local clock offsets and daylight-saving rules change over time. IANA records rules for representative locations.
- US Naval Observatory โ Dates of Primary Moon Phases
Moon-phase event times are supplied in Universal Time and must be converted for a local clock. This is astronomical context, not a Hindu observance rule.