Spoken Form

We use ordinal numbers to say the date in Esperanto. The month is added with de (and is never said as a number). The year is a cardinal number used without a preposition.

Today is the nineteenth of August/the eighth two thousand and fourteen.
→ Hodiaŭ estas la deknaŭa de aŭgusto du mil dek kvar.

As a translation of on we add the accusative -n to the day. Everything else stays the same.

It happened on the thirteenth of December nineteen ninety-five.
→ Tio okazis la tridekan de decembro mil naŭcent naŭdek kvin.

Written Form

To write the date, we use numerals in the British English style of day/month/year. The numerals can be separated by a slash (/) or a dash (–).
We can also write the month as a word. In this case we have to write la before the day and de before the month and add the ordinal number ending -a or -an to the day.
la 30a de marto 2015
Leipzig, la 30an de marto 2015

Day of the Week

lundo Monday
mardo Tuesday
merkredo Wednesday
ĵaŭdo Thursday
vendredo Friday
sabato Saturday
dimanĉo Sunday


januaro January julio July
februaro February aŭgusto August
marto March septembro September
aprilo April oktobro October
majo May novembro November
junio June decembro December