?repeats the group contents below at most once:
Tthe literal T (8410 / 1248 / 5416) (case sensitive)
\d{2}a digit, repeated exactly 2 times
:the literal : (5810 / 728 / 3A16)
\d{2}a digit, repeated exactly 2 times
:the literal : (5810 / 728 / 3A16)
\d{2}a digit, repeated exactly 2 times
Non-Capturing Group(?:\.{0,1}) \.{0,1}optionally matches the literal . (4610 / 568 / 2E16)
\d{0,}a digit, repeated any number of times
Group 8(Z|([\-+])(\d{2})(?::{0,1})(\d{2}))? ?repeats the group contents below at most once:
Zthe literal Z (9010 / 1328 / 5A16) (case sensitive)
2nd Alternative([\-+])(\d{2})(?::{0,1})(\d{2}) \-the literal - (4510 / 558 / 2D16)
+the literal + (4310 / 538 / 2B16)
\d{2}a digit, repeated exactly 2 times
Non-Capturing Group(?::{0,1}) :{0,1}optionally matches the literal : (5810 / 728 / 3A16)
\d{2}a digit, repeated exactly 2 times