Deadline / Dateline
Different meaningsA deadline is a time limit; a dateline belongs to news or journalistic attribution.
Deadline
Use when
You mean the latest time by which work must be completed or submitted.
Example
“The deadline for nominations is 30 September.”
Dateline
Use when
You mean the line in a news report identifying where and often when the report was filed.
Example
“The article carried a Singapore dateline.”
Quick check
dateline for submission, project dateline, closing dateline
Usage note