Dates and time input

Enter a local instruction

The Date and Anchor time fields refer to the selected anchor city. Use a complete calendar date and a valid local time from 00:00 through 23:59. The app resolves that wall time with the anchor’s IANA rules. It does not assume that a numeric offset shown on another date still applies.

Stay within the supported planning range

This build supports 1 January 2026 through 31 December 2035. A seven-day search also needs all seven dates inside the range. A twelve-week preview may extend beyond the range even when its first date is valid; move the start earlier or review a supported plan when the preview reports that limit.

Use the device clock with context

Use device time takes the current instant from the browser’s device clock and displays it in the anchor city. It is a convenience, not a precision time service. If the result looks wrong, check the device’s date and clock. For a future meeting, enter the actual planned date manually.

Choose a display format

The 12-hour and 24-hour options change how times are shown. They do not change the underlying local input, duration, selected instant, or calendar timestamps. In a 12-hour display, read AM or PM and the local date together, especially at midnight.

Distinguish two ways to change the anchor

Keep the same moment preserves the instant while changing the new anchor’s local display. Keep the same local time preserves the written date and clock time and resolves a new instant. A New York 09:00 meeting does not remain the same instant if you reinterpret it as London 09:00.

Resolve a local-time warning

A time inside a forward-change gap has no matching instant and must be corrected. A time inside a backward-change fold has two candidates and needs an earlier-or-later choice. Read the numeric offset attached to the choice before using the result. Export remains unavailable while the selected time is unresolved.