❓ Frequently Asked Questions
What do the colours mean?+
Green is 9am–6pm, a normal working hour. Amber is early morning or evening — reachable, but outside office hours. Grey is roughly 10pm–7am, when most people are asleep.
Why does one column have a coloured edge?+
That marks where the date rolls over to the next day in that city. It is easy to book a meeting on the wrong day across far-apart zones, so the boundary is drawn in.
Does it handle daylight saving?+
Yes. Every city uses its official time zone, so daylight saving is applied automatically for the date you are viewing — including dates in the past or future.
Are my cities saved?+
Yes, in your own browser only. Nothing is sent to a server, and clearing your browser data resets it.