What is the letter "z" in a date?

Question

PHP

There is a line like this: 2018-12-22T14:00:00.008Z
If 14:00:00 is hours, minutes and seconds, then what does "z" or "008Z" mean?

Answer 1

php.net/manual/ru/function.date.php
Z - Time zone offset in seconds. For time zones located west of UTC, negative numbers are returned, while those located east of UTC are returned positive. (from -43200 to 50400)