Dates
Date format
12 February 2018
NB: Date format for forms deviates.
Days of the week
Abbreviate as follows without period:
Mon, Tue, Wed, Thu, Fri, Sat, Sun
Months of the year
Abbreviate as follows without period:
Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sept, Oct, Nov, Dec
Years
Series of years
✔ 1885–97
✔ 1885–1897 [in headings]
✘ 1885–7
NB: Use en dash for number series.
Period straddling two calendar years
Summer Semester 2014/15
Centuries
✔ the nineteenth century
✔ nineteenth-century England [adjectival phrase]
✘ the 19th century / the 19th c.
Decades
the 1960s
the 60s
NB: No apostrophe
BCE/CE
✔ BCE [Before the Common Era]
✔ CE [Common Era]
✘ BC [Before Christ] / AD [Annus Domini]