Use numerals and am or pm in lower case, with a space in between. Don’t use minutes for on-the-hour time. Use noon and midnight when talking about 12:00.
Use a hyphen between times to indicate a time period.
✅ 7 am-10:30 pm
If the time period doesn’t cross the meridian, just use one am or pm.
Specify time zones when writing about an event or something else people would need to schedule. Since Videobolt is in Serbia, we default to CET.
When referring to international time zones, spell them out: Nepal Standard Time, Australian Eastern Time. If a time zone does not have a set name, use its Coordinated Universal Time (UTC) offset.
Abbreviate decades when referring to those in the 20th century. Skip the apostrophe.
When talking about a decade in the 21st century, write out the year.
Follow the same convention for dates over a 100 years ago.