Technical writing covers a vast number of topics in an occupational field. It follows the same standard rules of grammar for the proper punctuation of dates as in other types of writing. Writers will have to select either a comma or semicolon for this depending on the type of date information that needs to be separated.
In technical writing, the comma has a few uses for separating dates. Use commas to separate the day of the month from the year and to separate the date from the rest of the sentence. For example:
"June 12, 2013, was an important date."
Omit the coma if you include only the month and year. For example:
"June 2013 was a busy month."
To separate a series of different dates in technical writing, insert a semicolon in between each date. For example:
"June 26, 2012; June 27, 2013; and June 28, 2014."
The semicolon helps a reader to distinguish one date from another in a series.
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