Reference implementation Β· v1 Β· MIT

πŸ•’ Timecard open standard

Tap or click any time-with-timezone below. It converts to your device timezone on a card above it β€” 24-hour clock with your zone acronym β€” holds long enough to read, then auto-fades over ~5 seconds on an S-curve. No second tap. Tap again to re-see it.

1 Β· Times in the wild (zero-config text scan)

These times are plain text in paragraphs β€” the snippet found and wrapped them automatically. Hover to feel the affordance; Tab to one and hit Enter for the keyboard path.

Team standup is at 9am PT every weekday. Don't be late.

The keynote starts at 14:00 CET β€” doors open half an hour earlier.

Call with the Tokyo office at 4:30pm JST, then dinner at 7pm ET.

Deployment window: 11:59pm EST Friday through 2am EST Saturday.

Flight lands 6:45am NZDT; the Sydney connection leaves at 9:15am AEDT.

2 Β· Day-boundary rollover

When the conversion crosses midnight, the card says so β€” a small +1 day / βˆ’1 day tag rides under the converted time. Try these from wherever you are:

West-coast late show: 11:30pm PT.

Tokyo early bird: 12:15am JST.

London midnight deploy: 00:30 GMT.

3 Β· Fractional offsets

Not every zone is a whole hour. India runs +5:30, Nepal +5:45, parts of Australia +9:30 β€” the math is minute-exact:

Standup with Bangalore at 2:30pm IST.

Kathmandu check-in at 9:45am NPT.

Adelaide sync at 10:00am ACST.

4 Β· Your device

Conversions target whatever the OS reports β€” no settings, no pickers:

Detecting…