Regex Tester & Validator

This regular expression parses and captures individual components of a date and time string formatted according to the ISO-8601 standard. It matches a standard 4-digit year or an expanded 6-digit year with a plus sign, followed by progressively optional groups for month, day, time (hours, minutes, seconds), fractional seconds, and timezone offset. It is highly useful for extracting specific date and time segments from standardized log entries or API payloads into distinct capturing groups.