regex101: PCRE (Legacy) Match Workspace

Pro

Group 1((?!00)[0-1][0-9]|2[1-4])

1st Alternative(?!00)[0-1][0-9]

Negative Lookahead(?!00)

00the literal text 00

Character Class[0-1]

0-1one character from 0 (48₁₀) to 1 (49₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

2nd Alternative2[1-4]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[1-4]

1-4one character from 1 (49₁₀) to 4 (52₁₀)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Character Class[0-5]

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

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Global pattern flags

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

25 tokens

Regular Expression

((?!00)[0-1][0-9]|2[1-4]):[0-5][0-9]

New

Extraction