Show a world clock next to your clock

A second clock is a new applet that extends the built-in one with its own timezone.

Add the second clock

In ~/.config/glimpse/panel.toml, define an applet under [applets.<name>] with extends = "clock" and the IANA zone it should read, then put its name in a zone:

[applets.tokyo]
extends = "clock"
timezone = "Asia/Tokyo"

[[panels]]
right = [
    "tokyo", "next-event", "tray", "removable", "clipboard", "printing", "bluetooth",
    "network", "display", "audio", "idle", "power", "keyboard", "session",
]

This is the default right zone with "tokyo" added at the front. Writing a zone replaces its whole default list, so keep the names you want to stay on the bar.

timezone takes an IANA name such as UTC or Asia/Tokyo; unset is the local zone. A name glimpse doesn't know shows your local time, so check the spelling (Asia/Tokyo, not Tokyo). The instance takes every other clock setting too, so label-format can give it a different format. It starts from the built-in defaults and does not read [applets.clock], so set what you want on the instance itself.

Add cities to the clock popover

The clock's popover has a world clock section fed by the timezones list. Each entry needs a label and a timezone; icon and note are optional:

[applets.clock]
timezones = [
    { label = "Tokyo", timezone = "Asia/Tokyo" },
    { label = "Denver", timezone = "America/Denver", note = "the office" },
]

A row says Tomorrow or Yesterday when its day is not yours and shows no word on the same day. The note follows that word, or stands alone. An empty list hides the section.

Every clock setting is in the information applets reference.