^start of line
Character Class[[:digit:]]{4} {4}matches exactly 4 characters from the set below:
[:digit:]a digit [0-9]
\-the literal - (4510 / 558 / 2D16)
Character Class[[:digit:]]{2} {2}matches exactly 2 characters from the set below:
[:digit:]a digit [0-9]
\-the literal - (4510 / 558 / 2D16)
Group 3([[:digit:]]{2}T[[:digit:]]{2}) Character Class[[:digit:]]{2} {2}matches exactly 2 characters from the set below:
[:digit:]a digit [0-9]
Tthe literal T (8410 / 1248 / 5416) (case sensitive)
Character Class[[:digit:]]{2} {2}matches exactly 2 characters from the set below:
[:digit:]a digit [0-9]
\:the literal : (5810 / 728 / 3A16)
Character Class[[:digit:]]{2} {2}matches exactly 2 characters from the set below:
[:digit:]a digit [0-9]
\:the literal : (5810 / 728 / 3A16)
Character Class[[:digit:]]{2} {2}matches exactly 2 characters from the set below:
[:digit:]a digit [0-9]
UTCthe literal text UTC (case sensitive) $end of line
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