Time Ranges
Time-range formatting depends on context. Microsoft recommends “to” in running text and an unspaced en dash in many schedules, while Australian Government guidance varies en-dash spacing according to AM/PM and words such as noon or midnight.
For prose, write a time range with “to” when that matches the house style, such as “10:00 AM to 2:00 PM.” Schedules may use an en dash; spacing depends on the chosen style and the elements in the range.
Key details
Important caveats
Spacing Boundary
En-dash spacing can change depending on whether AM/PM or words such as noon/midnight appear on both sides.
Further guidance
Prose Vs Display
Use words such as “to” in ordinary prose when the style calls for them; compact schedules can use an en dash.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Date and time terms — Microsoft Style Guide (opens in a new tab)Microsoft · Microsoft house style for AM/PM and human-facing time notation
- Dates and time — Australian Government Style Manual (opens in a new tab)Australian Government Style Manual · Australian Government guidance for day–month–year dates, ordinal dates, decades, centuries, time zones, and en-dash spacing in date/time spans