Regular Expressions 101

1st Alternative\d+:\d+(?::\d+)?

\d+a digit, repeated at least once

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d+a digit, repeated at least once

Non-Capturing Group(?::\d+)?

?repeats the group contents below at most once:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d+a digit, repeated at least once

2nd Alternative(:\w+)

Group 1(:\w+)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\w+any word character, repeated at least once

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

\d+:\d+(?::\d+)?|(:\w+)

New

2018-05-21T00:00:00+02:00
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:light at 07:15:0000