Date and time notation in the Netherlands

Date

In the Netherlands, dates are written using the little-endian pattern "day-month-year" as is usual elsewhere in Europe and many other countries. Either dashes or slashes are used as separators. Times are written using 24-hour notation.
The names and abbreviations of months and days are as follows:

English	Dutch	Dutch abbreviation
January	januari	jan.
February	februari	feb.
March	maart	mrt.
April	april	apr.
May	mei	mei
June	juni	juni
July	juli	juli
August	augustus	aug.
September	september	sep.
October	oktober	okt.
November	november	nov.
December	december	dec.

English	Dutch	Dutch abbreviation
Monday	maandag	ma.
Tuesday	dinsdag	di.
Wednesday	woensdag	wo.
Thursday	donderdag	do.
Friday	vrijdag	vr.
Saturday	zaterdag	za.
Sunday	zondag	zo.

Names of months and days are not capitalised in Dutch.

Time

In written language, time is expressed in the 24-hour notation, with or without leading zero, using a full stop or colon as a separator, sometimes followed by the word uur or its abbreviation u. - for example, 22.51 uur, 9.12 u., or 09:12. In technical and scientific texts the use of the abbreviations h, min and s is common - for example, 17 h 03 min 16 s. The use of the 12-hour clock in numeric writing is not standard practice, not even in informal writing, and writing e.g., "1.30" for 13:30 would be regarded as odd. The actual Dutch terms for a.m. and p.m. are respectively v.m. and n.m., but these are very old-fashioned and even more rare than the use of a.m. and p.m. in written language.
In spoken language, most often time is expressed in the 12-hour clock. However, "a.m." and "p.m." are never used. Instead, an apposition is added, for instance 21:00 is said as "9 uur 's avonds". Half hours are relative to the next hour - for example, 5:30 is said as "half 6". Quarter hours are expressed relative to the nearest whole hour - for example, 6:15, "kwart over 6" and 6:45, "kwart voor zeven". Minutes are usually rounded off to the nearest five minutes and are expressed relative to the closest half-hour. For instance 05:35 is "5 over half 6" and 05:20 is "tien voor half 6".
When the 24-hour clock is used in spoken language, which is not quite common, usually the written form is pronounced with the hours as a number, the word "uur" followed by the minutes as a number. For example, 17:21 might be pronounced as "zeventien uur eenentwintig". Hours over 12 are not usually combined with phrasings using "half", "quarter", "to", or "past".