I've expanded
https://phabricator.wikimedia.org/T66430 .
We need more examples from languages where things can get problematic.
You are probably interested in this if you ever saw a mention of "pretty
timestamps", "human timestamps" or one of the following messages:
"just-now": "just now",
"hours-ago": "$1 {{PLURAL:$1|hour|hours}} ago",
"minutes-ago": "$1 {{PLURAL:$1|minute|minutes}} ago",
"seconds-ago": "$1 {{PLURAL:$1|second|seconds}} ago",
"monday-at": "Monday at $1",
"tuesday-at": "Tuesday at $1",
"wednesday-at": "Wednesday at $1",
"thursday-at": "Thursday at $1",
"friday-at": "Friday at $1",
"saturday-at": "Saturday at $1",
"sunday-at": "Sunday at $1",
"today-at": "$1",
"yesterday-at": "Yesterday at $1",
Nemo