Pattern
/\d{4}-\d{2}-\d{2}/Sample text
Started 2026-07-31 Due: 2025-01-02 Not a date: 31/07/2026Test this pattern in the editor
ISO dates
Find YYYY-MM-DD dates in logs and prose.
Related patterns
ISO date-time
ISO-8601 timestamps with optional timezone.
IPv4 addresses
Octet-bounded IPv4 matcher for log scraping.
IPv6 (simplified)
Common full and compressed IPv6 forms.
Log levels
Pull severity tokens from structured logs.
Apache log line
Host, time, and request from a Combined log line.
European dates
DD.MM.YYYY or DD/MM/YYYY calendar dates.