Add more features to clock

docs/configuration.md

@@ -966,18 +966,50 @@ Whether to open the link in the same tab or a new one.
 Whether to hide the colored arrow on each link.
 
 ### Clock
-Display a clock showing the current time.
+Display a clock showing the current time and date. Optionally, also display the the time in other timezones.
 
 Example:
 
 ```yaml
 - type: clock
+  hour-format: 24h
+  timezones:
+    - timezone: Europe/Paris
+      label: Paris
+    - timezone: America/New_York
+      label: New York
+    - timezone: Asia/Tokyo
+      label: Tokyo
 ```
 
 Preview:
 
 ![](images/clock-widget-preview.png)
 
+#### Properties
+
+| Name | Type | Required | Default |
+| ---- | ---- | -------- | ------- |
+| hour-format | string | no | 24h |
+| timezones | array | no |  |
+
+##### `hour-format`
+Whether to show the time in 12 or 24 hour format. Possible values are `12h` and `24h`.
+
+#### Properties for each timezone
+
+| Name | Type | Required | Default |
+| ---- | ---- | -------- | ------- |
+| timezone | string | yes | |
+| label | string | no | |
+
+##### `timezone`
+A timezone identifier such as `Europe/London`, `America/New_York`, etc. The full list of available identifiers can be found [here](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones).
+
+##### `label`
+Optionally, override the display value for the timezone to something more meaningful such as "Home", "Work" or anything else.
+
+
 ### Calendar
 Display a calendar.