Time, Date and Schedule Tools
- Convert timestamps from logs or exports
- Generate timestamps from local date input
- Check time-sensitive verification windows
A technical article on how cron expressions are read, why schedules are misinterpreted, and how to verify future runs before deploying jobs.
Time Zones Explained: Offsets, IANA Names, DST, and Launch PlanningA technical article on why offsets are not time zones, how daylight saving changes schedules, and how to communicate launch windows clearly.
Unix Timestamps Explained: Seconds, Milliseconds, UTC, and Log DebuggingA practical guide to Unix timestamps, unit confusion, UTC display, JavaScript milliseconds, and how to read time fields in logs and APIs.
Generate UUIDs, passwords, TOTP codes, hashes, and quick security check values.
Cryptography and Security ToolsWork with JWT, hashes, TOTP, AES, DES, RSA, and password generation from one security toolbox.
Schedule and Time Zone ToolsPrepare timestamps, time zones, cron schedules, and time-based codes for launches, logs, and meetings.
Tools In This Collection
Timestamp Converter
Convert Unix timestamps, batch date strings, ISO, local time and generate timestamps from date input.
TOTP Generator
Generate current TOTP codes from a secret or otpauth URI with configurable digits, period and algorithm.
Timezone Converter
Convert one date and time across major time zones, compare offsets, and keep a live current-time board in the browser.
Crontab Expression Tool
Explain cron expressions, generate friendly schedules, and preview upcoming run times directly in the browser.