In Iran, an unlabelled official date normally belongs to the Solar Hijri calendar, تقویم هجری شمسی. Its year turns at نوروز, not on 1 January. Iranian speakers also use Gregorian dates whenever an international audience, foreign website, passport, flight, conference, or cross-border deadline makes them useful. Successful communication therefore requires more than reading the digits: you must know which calendar the speaker presupposes and when to name it explicitly.
This page teaches those social assumptions. It does not reteach month names, numerical date formation, or conversion arithmetic; those belong on Dates and the Solar Hijri Calendar. The historical relation between Nowruz and the spring equinox is documented by Encyclopaedia Iranica, while UNESCO emphasizes that Nowruz is shared by numerous countries and communities rather than belonging to Iran alone.
The everyday calendar map
| Expression | Ordinary Iranian interpretation | When clarification helps |
|---|---|---|
| امسال | the current Solar Hijri year in an Iran-centered conversation | when participants are working in an international or Gregorian system |
| سال آینده | the Solar Hijri year beginning at the next Nowruz | near January or in translated international material |
| تعطیلات نوروز | the New Year holiday period around the start of Farvardin | when an institution publishes exact closure and reopening dates |
| تاریخ شمسی | a date in Iran's Solar Hijri system | when contrasted with میلادی or قمری |
| تاریخ میلادی | a Gregorian date | for passports, foreign forms, travel, or international events |
In a domestic office notice, ۱۴۰۵ ordinarily needs no label. On a bilingual conference page, however, writing only ۱۴۰۵ invites misunderstanding: an international reader may not even recognize it as a year. The principle is audience design. Leave the calendar implicit when every participant shares the Iranian institutional frame; name it or give both dates when the frame is mixed.
کار اداره بعد از تعطیلات نوروز از سر گرفته میشود.
kâr-e edâre ba'd az ta'tilât-e Nowruz az sar gerefte mi-shavad.
The office resumes work after the Nowruz holidays. (neutral Iranian institutional context)
امسال قرار است نوروز را در شیراز بگذرانیم.
emsâl qarâr ast Nowruz râ dar Shirâz begozrânim.
This year we are planning to spend Nowruz in Shiraz. (ordinary conversation)
سال آینده یعنی بعد از تحویل سال، نه بعد از اول ژانویه.
sâl-e âyande ya'ni ba'd az tahvil-e sâl, na ba'd az avval-e zhânviye.
Next year means after the New Year transition, not after the first of January. (calendar clarification)
Nowruz and تحویل سال
نوروز is the first day of the Solar Hijri year and the first day of spring in the Iranian calendar. تحویل سال names the precise New Year transition; families may ask what time it occurs because it does not necessarily coincide with midnight. This is a solar boundary, not a movable lunar festival. A lunar religious observance can move through the solar seasons; Nowruz remains tied to the spring boundary.
The phrase تعطیلات نوروز is broader than the instant of تحویل سال. It can refer pragmatically to a holiday period whose exact duration depends on the school, office, business, or speaker. Never infer an exact reopening day from the phrase alone.
تحویل سال امسال عصر است و همه زودتر به خانه میروند.
tahvil-e sâl-e emsâl asr ast va hame zudtar be khâne mi-ravand.
This year's New Year transition is in the afternoon, and everyone is going home earlier. (neutral)
دانشگاه تا پایان تعطیلات نوروز تعطیل است.
dâneshgâh tâ pâyân-e ta'tilât-e Nowruz ta'til ast.
The university is closed until the end of the Nowruz holidays. (institutional notice; the reopening date should be checked separately)
اداره اعلام کرده است که از چه روزی دوباره باز میشود.
edâre e'lâm karde ast ke az che ruzi do-bâre bâz mi-shavad.
The office has announced which day it will reopen. (formal-neutral)
Domestic dates and international dates
In Iranian administrative life, invoices, school calendars, rental documents, appointment cards, and local news commonly use Solar Hijri dating without writing شمسی after every date. A Gregorian label becomes useful when a document crosses systems. International forms often explicitly request تاریخ تولد میلادی; obey the requested calendar rather than copying the date from an Iranian document unchanged.
وقت شما برای چهارشنبه دوازدهم آذر ثبت شده است.
vaqt-e shomâ barâ-ye chahârshanbe davâzdahom-e Âzar sabt shode ast.
Your appointment has been booked for Wednesday, the twelfth of Azar. (domestic context; Solar Hijri is presupposed)
این فرم تاریخ تولد را به میلادی میخواهد.
in form târikh-e tavallod râ be milâdi mi-khâhad.
This form asks for the date of birth in the Gregorian calendar. (international form)
تاریخ قرارداد شمسی است یا میلادی؟
târikh-e qarârdâd shamsi ast yâ milâdi?
Is the contract date Solar Hijri or Gregorian? (explicit clarification)
روی پوستر، تاریخ شمسی و میلادی هر دو آمدهاند.
ru-ye poster, târikh-e shamsi va milâdi har do âmade-and.
Both the Solar Hijri and Gregorian dates appear on the poster. (bilingual event listing)
نشست در ۱ فروردین ۱۴۰۳، برابر با ۲۰ مارس ۲۰۲۴، آغاز شد.
neshast dar 1 Farvardin-e 1403, barâbar bâ 20 Mârs-e 2024, âghâz shod.
The meeting began on 1 Farvardin 1403, corresponding to 20 March 2024. (dual dating)
The last example states a verified correspondence rather than offering a mental conversion rule. Conversion near year boundaries is a precision task; use a reliable calendar and keep the original calendar label in consequential documents.
Seasons, school, and administrative rhythm
Because the Solar Hijri year begins with spring, phrases such as بهار امسال and زمستان پارسال line up transparently with portions of the named Iranian year. The school year, however, does not begin at Nowruz: ordinary references to the start of school point to autumn. Administrative and financial schedules may each define their own opening, closing, or reporting period. Calendar knowledge supplies a default, not permission to invent an institution's deadline.
ثبتنام مدرسه پیش از شروع سال تحصیلی انجام میشود.
sabt-nâm-e madrese pish az shoru'-e sâl-e tahsili anjâm mi-shavad.
School registration takes place before the academic year begins. (neutral)
برای تعطیلات تابستان هنوز برنامهای نداریم.
barâ-ye ta'tilât-e tâbestân hanuz barnâme-i na-dârim.
We do not have plans for the summer holidays yet. (informal-neutral)
مهلت اداری در نامه مشخص شده است؛ از روی فصل حدس نزنید.
mohlat-e edâri dar nâme moshakhkhas shode ast; az ru-ye fasl hads na-zanid.
The administrative deadline is specified in the letter; do not guess it from the season. (formal instruction)
Common Mistakes
1. Treating 1 January as the unmarked Iranian New Year
⚠️ در ایران سال رسمی همیشه در اول ژانویه عوض میشود.
dar Irân sâl-e rasmi hamishe dar avval-e zhânviye avaz mi-shavad.
In Iran the official year always changes on 1 January. (a false calendar assumption)
✅ سال هجری شمسی با نوروز آغاز میشود.
sâl-e hejri-ye shamsi bâ Nowruz âghâz mi-shavad.
The Solar Hijri year begins with Nowruz.
2. Reading every four-digit year as Gregorian
⚠️ عدد ۱۴۰۵ را بدون توجه به متن، سال میلادی میخوانم.
adad-e 1405 râ bedun-e tavajjoh be matn, sâl-e milâdi mi-khânam.
I read 1405 as a Gregorian year without attending to context. (wrong strategy)
✅ در این نامهی ایرانی، ۱۴۰۵ سال هجری شمسی است.
dar in nâme-ye Irâni, 1405 sâl-e hejri-ye shamsi ast.
In this Iranian letter, 1405 is a Solar Hijri year.
3. Calling Nowruz a movable lunar holiday
❌ نوروز هر سال در یک ماه قمری جابهجا میشود.
Incorrect — Nowruz is tied to the solar spring boundary, not a holiday moving through the lunar year.
✅ نوروز آغاز بهار و سال هجری شمسی است.
Nowruz âghâz-e bahâr va sâl-e hejri-ye shamsi ast.
Nowruz is the beginning of spring and of the Solar Hijri year.
4. Mixing systems inside one date
❌ ۱۵ مارس ۱۴۰۵
Incorrectly mixed as one date — a Solar Hijri year has been combined with a Gregorian month name.
✅ تاریخ را یا کامل شمسی بنویسید یا کامل میلادی.
târikh râ yâ kâmel-e shamsi be-nevisid yâ kâmel-e milâdi.
Write the date either fully in the Solar Hijri calendar or fully in the Gregorian calendar.
5. Converting silently in a consequential document
⚠️ تاریخ را ذهنی تبدیل میکنم و نام تقویم را نمینویسم.
târikh râ zehni tabdil mi-konam va nâm-e taqvim râ nemi-nevisam.
I convert the date mentally and omit the calendar name. (unsafe for consequential documents)
✅ تاریخ اصلی و تقویم آن را نگه میدارم و تبدیل را بررسی میکنم.
târikh-e asli va taqvim-e ân râ negah mi-dâram va tabdil râ barrasi mi-konam.
I retain the original date and its calendar and verify the conversion.
The practical rule is simple: Iranian dates carry a social frame. Recognize Nowruz as the year boundary, treat holiday periods as institution-dependent, and label the calendar whenever your audience may not share the same default.
Key Takeaways
- In an Iran-centered context, an unlabelled official date normally presupposes the Solar Hijri calendar.
- Nowruz and تحویل سال mark the solar New Year boundary; Nowruz is not a movable lunar holiday.
- Holiday, school, and administrative periods require their own announced operational dates.
- In international communication, write شمسی, میلادی, or both, and verify any conversion.
Now practice Farsi
Reading grammar gets you part of the way. The exercises are where it sticks — free, no signup needed.
Start learning Farsi →Related Topics
- Dates and the Solar Hijri CalendarA2 — Form Iranian Persian dates with day–month–year order, Persian month names, cardinal or ordinal days, and clearly labeled calendar systems.
- Cardinals from Zero to TwentyA1 — Read, pronounce, write, and use Persian cardinal numbers from صفر to بیست with Persian digits and singular counted nouns.
- Making Plans and ArrangementsA2 — Build complete Persian plans by proposing an activity, agreeing on a time and place, and confirming what everyone will do.
- Time and Duration FramesA2 — Place events on the clock, delimit intervals with از ... تا, and distinguish ongoing چند وقت است from event-duration طول کشیدن.