Use the format required by your context
Common formats include YYYY-MM-DD, DD/MM/YYYY, and MM/DD/YYYY
Write the month name if the format is formal or unclear
Keep day, month, and year in a consistent order
Use leading zeros where required, such as 2026-06-27
Avoid ambiguous formats when the audience may be international
Match the date style used in forms, documents, or publications
Check whether the date should be written in numeric or textual form
Use commas only where the style guide requires them
Ensure the date is spelled and punctuated consistently