Dates and numbers
Months
Use the format [Month] [Year].
March 2014
December 2019
Quarters
Use months instead of quarters. When you can prove that either “Q1” or “Quarter 1” are searched for, then follow the term with an explanation of which months are included in the quarter.
Business investment: January to March 2014 provisional
Gross domestic product, preliminary estimate, UK: Quarter 1 (Jan to Mar) 2014
Date Spans
Use [date] to [date]. If months are used, repeat the year after each month.
2009 to 2010
July 2014 to September 2014
Non-calendar years
Use the type of year and ending month and year.
financial year ending March 2011
academic year ending July 2013
Ages
Use “aged [age] to [age] years”. For ages under a year, include months or weeks.
aged 6 to 8 weeks
aged 9 to 10 years
Bottom limits for age restrictions should use “aged [age] years and over”, and not a plus sign.
aged 75 years and over