Regular Expressions 101

Group 1(\d{4}-\d{2}-\d{2})

\d{4}a digit, repeated exactly 4 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2}a digit, repeated exactly 2 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2}a digit, repeated exactly 2 times

Group 2(\s|T|t)

1st Alternative\s

\sany whitespace character

2nd AlternativeT

Tthe literal T (84₁₀ / 124₈ / 54₁₆) (case sensitive)

3rd Alternativet

tthe literal t (116₁₀ / 164₈ / 74₁₆) (case sensitive)

Group 3(\d{2}:\d{2}(?::\d{2})?)?

?repeats the group contents below at most once:

\d{2}a digit, repeated exactly 2 times

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d{2}a digit, repeated exactly 2 times

Non-Capturing Group(?::\d{2})?

?repeats the group contents below at most once:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d{2}a digit, repeated exactly 2 times

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(\d{4}-\d{2}-\d{2})(\s|T|t)(\d{2}:\d{2}(?::\d{2})?)?

2016-02-01
2016-02-01 00:00
2016-02-01T00:00

2016-11-10 12:30:11
2016-02-01T12:30:11