Use the 24 hour clock eg: 10:30-17:00
It can be assumed that times are given for the local time zone.
In 24-hour format, always show minutes using a colon as the separator; eg: 17:00, not 17.00 nor 17-00 and not just 17 and never 17:0.
Where an establishment does not close on a particular day or range of days, instead of showing 00:00-24:00 you can write 24 hours; if the establishment doesn't close all week: 24/7
For articles about topics where the AM/PM system (or 12-hour format) is prevalent, the following format can be used as an alternative: 10:30AM-5PM.
Choose to deviate from our standard, 24 hour format only to follow predominant local usage. Ask yourself: which format will visitors see in newspapers, on shop doors, and on train schedules?
In this alternative AM/PM system, use "noon" and "midnight", not 12AM and 12PM.
In this alternative 12-hour format, minutes are not shown when not required, eg: 5PM, not 5:00PM.
Spaces and periods (full stops) should be left out, eg: 10:30AM-5PM, not 10:30 A.M. – 5 P.M.
Spaces should be left out for noon and midnight too, eg: 10AM-noon.