{timeago $created} writes how long ago the moment was - just now, 5 minutes ago, yesterday, 3 weeks ago, and for a moment still to come, in 2 days - inside a <time class="pad-timeago">. The element's datetime is the moment in ISO 8601, for machines, and its title the moment in full, which a browser shows on hover. The words are those of the ago pipe, with the semantic element around them.

Now is padNow (), so padNowFreeze () in PHP holds a page still for a test. now= counts from a given moment instead - which is how the examples here stay the same on every request. format= is the PHP date format of the title.

An empty moment writes nothing, so a row without a date leaves no empty element behind. A moment, or a now=, that cannot be read as a date is a strict error. For the time left until a moment, use {countdown}.