دی

دی is the deep-winter month, named after the oldest divine name in the Iranian pantheon. It also carries the memory of a recent uprising.

What it actually means

دی (dey) is the 10th month of the Iranian solar calendar, running from roughly December 22 to January 20. It is the first month of winter (زمستان, zemestân). Unlike most month names, دی is a single short syllable, which makes it stand out on calendars and in speech. Iranians often add ماه (mâh, month) when context could be ambiguous: دی‌ماه (dey-mâh) makes clear you mean the month and not the homophonous past-marker.

Where it comes from

The name دی comes from Avestan Daθuš (“the Creator”), an epithet of Ahura Mazda himself. In the Zoroastrian Yazata system, Dey is the name of the supreme creator-deity invoked four times in the month: on the 1st, 8th, 15th, and 23rd days, all called روز دی (ruz-e dey). Older Persian almanacs treat the month as a quartered month for this reason. Like the other 11 month names, دی survived from the pre-Islamic calendar through every regime change since.

Note: Dey-96

In late دی 1396 (December 2017 to January 2018), protests broke out across Iranian cities over economic conditions and quickly spread into political demands. According to Amnesty International, around 25 people were killed in the crackdown. The protests are now referred to in Persian political vocabulary as اعتراضات دی ۹۶ (e’terâzât-e dey 96). See دی ۹۶ for the full entry.

How to say it

Formal (نوشتاری): دی · dey · “Dey (10th month)”

Colloquial (محاوره): دی or دی‌ماه · dey / dey-mâh

In a sentence

• دی‌ماه سردترین ماه سال است. · dey-mâh sard-tarin mâh-e sâl ast. · Dey is the coldest month of the year.
• جشن یلدا اول دی برگزار می‌شود. · jashn-e yaldâ avval-e dey bargozâr mishavad. · Yalda is held on the first of Dey.
• اعتراضات دی ۹۶ سراسری شد. · e’terâzât-e dey 96 sarâsari shod. · The Dey-96 protests went nationwide.

Cultural note

دی is a winter word at the bone level. Classical poets paired it with cold, snow, and longing: Saadi and Hafez both use the contrast between دی (the bitter month) and بهار (spring) as a stand-in for hardship and renewal. The first day of دی is also شب چله (shab-e chelle), the longer night-celebration that overlaps with Yalda. Modern Iranians read all of this as one continuous text. The Yazata at the top, the solstice underneath, Saadi in the bookshelf, and now a date that means a protest crackdown.

Related

Adjacent months: آذر (before) and بهمن (after). For the long story of the calendar see the Persian solar calendar guide.