A handoff with two clocks and one decision “Tomorrow morning” is not a shared deadline. Write the recipient’s next action and the response window in named time zones. This fictional London–New York handoff falls just after the UK clock change; the UTC record makes the unusual week visible. 1. Choose an actual date and named zones, not a permanent offset such as “New York = UTC−5”. Check the conversion for that date and repeat it when rescheduling. Do not infer a colleague’s working hours from their location. 2. Identify what is ready, its exact version and the one decision required. Put context in the shared record rather than requiring someone to reconstruct a private chat. Link the work and state which part must remain unchanged. 3. State when the recipient will next review it and when the sender will next be available, using agreed working hours. Name an escalation route for genuine urgency; do not make an overnight response the default. 4. Close the loop with an acknowledgement and a decision recorded beside the work. If the window is missed, renegotiate the affected commitment. A read receipt is not an approval. Training date: Monday 26 October 2026. London uses GMT (UTC+0); New York is still on EDT (UTC−4). One instant, three labels: 14:00 UTC = 14:00 Europe/London = 10:00 America/New_York. These are conversion examples, not agreed work schedules. Ready to review: Draft v3, section “Acceptance”. Request: choose A or B and record one reason. Budget section is out of scope. Response agreement — fictional: Review at 10:00 New York; decision by 12:00 New York / 16:00 London. Sender returns at 15:00 London. Urgent blocker: agreed duty contact. Copyable message: Ready: __; version/link: __; decision: __; review date/time/zone: __; same instant in UTC: __; sender next available: __; escalation: __; acknowledgement: __. Training date: ____________________ One instant, three labels: ____________________ Ready to review: ____________________ Response agreement — fictional: ____________________ Copyable message: ____________________ The following week has different offsets in the US. Recalculate the event rather than reusing this four-hour difference. The downloadable record keeps the date beside every time. IANA — time zone database — https://www.iana.org/time-zones