Regular Expressions 101

Pro

Group 1(20\d{2})

20the literal text 20

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

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 2(0[1-9]|1[0-2])

1st Alternative0[1-9]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

2nd Alternative1[0-2]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[0-2]

0-2one character from 0 (48₁₀) to 2 (50₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 3([01][\d]|3[01])

1st Alternative[01][\d]

Character Class[01]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[\d]

\da digit

2nd Alternative3[01]

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

Character Class[01]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[\sT]

\sany whitespace character

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

Group 4([01]\d|2[0-3])

1st Alternative[01]\d

Character Class[01]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

\da digit

2nd Alternative2[0-3]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0-3]

0-3one character from 0 (48₁₀) to 3 (51₁₀)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 5([0-5]\d)

Character Class[0-5]

0-5one character from 0 (48₁₀) to 5 (53₁₀)

\da digit

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 6([0-5]\d)

Character Class[0-5]

0-5one character from 0 (48₁₀) to 5 (53₁₀)

\da digit

Group 7(Z|[\+-](0[\d]|1[\d]|2[0-3]):([0-5]\d))?

?repeats the group contents below at most once:

1st AlternativeZ

Zthe literal Z (90₁₀ / 132₈ / 5A₁₆) (case sensitive)

2nd Alternative[\+-](0[\d]|1[\d]|2[0-3]):([0-5]\d)

Character Class[\+-]

Group 8(0[\d]|1[\d]|2[0-3])

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 9([0-5]\d)

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

(20\d{2})-(0[1-9]|1[0-2])-([01][\d]|3[01])[\sT]([01]\d|2[0-3]):([0-5]\d):([0-5]\d)(Z|[\+-](0[\d]|1[\d]|2[0-3]):([0-5]\d))?

2023-01-01 00:00:00Z
2023-12-31 23:59:59+00:00
2023-06-06 13:47:23-06:00
2023-06-06T13:47:23+23:45
2023-06-06T13:47:23