docs(srv): add doc on cron schedules MTA-4231 (#2799)

* docs(srv): add doc on cron schedules MTA-4231

* docs(srv): update

* docs(srv): update

Author: SamyOubouaziz

macros/serverless/cron-schedules.mdx

@@ -62,4 +62,10 @@ Several operators can be added to each field to further refine your schedule.
 | `0 9 1-24 DEC *`           | Runs at 9:00 every day during the first 24 days of December    |
 | `30 17 * * 5`              | Runs at 17:30 every Friday                                     |
 | `0 0 * 8 *`                | Runs at 00:00 (midnight) every day in August                   |
-| `1 1 1 1 1`                | Runs every January 1st, at 01:01 and on Mondays in January     |
+| `1 1 1 1 1`                | Runs every January 1st, at 01:01 and on Mondays in January     |
+
+## Time zones
+
+- Serverless Functions and Serverless Containers [CRON triggers](/serverless/functions/concepts#cron-trigger) use the **UTC** time zone. This parameter cannot be modified.
+
+- Serverless Jobs allow modifying the time zone of their schedules via the Job **Settings** tab. Refer to [the job scheduling documentation](/serverless/jobs/how-to/manage-job-schedule/) for more information.

menu/navigation.json

@@ -1358,6 +1358,10 @@
                     "label": "Monitor a job",
                     "slug": "monitor-job"
                   },
+                  {
+                    "label": "Manage the scheduling of a job",
+                    "slug": "manage-job-schedule"
+                  },
                   {
                     "label": "Delete a job",
                     "slug": "delete-job"

serverless/containers/concepts.mdx

@@ -28,7 +28,7 @@ Container Registry is the place where your images are stored before being deploy
 
 ## CRON trigger
 
-A CRON trigger is a mechanism used to automatically invoke a Serverless Function at a specific time on a recurring schedule. It works similarly to a traditional Linux [cron job](https://en.wikipedia.org/wiki/Cron), using the `* * * * *` format. Refer to our [cron schedules reference](/serverless/containers/reference-content/cron-schedules/) for more information.
+A CRON trigger is a mechanism used to automatically invoke a Serverless Function at a specific time on a recurring schedule. It works similarly to a traditional Linux [cron job](https://en.wikipedia.org/wiki/Cron), using the `* * * * *` format, and uses the **UTC** time zone. Refer to our [cron schedules reference](/serverless/containers/reference-content/cron-schedules/) for more information.
 
 ## GB-s
 

serverless/containers/how-to/add-trigger-to-a-container.mdx

@@ -73,7 +73,7 @@ NATS subjects of the [Scaleway Messaging and Queuing](/serverless/messaging/quic
 
 ## CRON triggers
 
-A CRON trigger is a mechanism for invoking a Serverless Container at a specific time or on a recurring schedule, similar to a traditional cron job on a Linux server.
+[CRON triggers](/serverless/containers/concepts/#cron-trigger) allow you to invoke your containers based on a recurring schedule. The CRON triggers for Serverless Containers use the **UTC** time zone.
 
 1. Click **Containers** in the **Serverless** section of the side menu. The containers page displays.
 2. Click the relevant containers namespace.

serverless/functions/concepts.mdx

@@ -16,7 +16,7 @@ Cold start is the time a function Instance takes to handle a request when it is
 
 ## CRON trigger
 
-A CRON trigger is a mechanism used to automatically invoke a Serverless Function at a specific time on a recurring schedule. It works similarly to a traditional Linux [cron job](https://en.wikipedia.org/wiki/Cron), using the `* * * * *` format. Refer to our [cron schedules reference](/serverless/functions/reference-content/cron-schedules/) for more information.
+A CRON trigger is a mechanism used to automatically invoke a Serverless Function at a specific time on a recurring schedule. It works similarly to a traditional Linux [cron job](https://en.wikipedia.org/wiki/Cron), using the `* * * * *` format, and uses the **UTC** time zone.  Refer to our [cron schedules reference](/serverless/functions/reference-content/cron-schedules/) for more information.
 
 ## Environment variables
 

serverless/functions/how-to/add-trigger-to-a-function.mdx

@@ -65,7 +65,7 @@ NATS subjects of the [Scaleway Messaging and Queuing](/serverless/messaging/quic
 
 ## CRON triggers
 
-[CRON triggers](/serverless/functions/concepts/#cron-trigger) allow you to invoke your functions based on a recurring schedule.
+[CRON triggers](/serverless/functions/concepts/#cron-trigger) allow you to invoke your functions based on a recurring schedule. The CRON triggers for Serverless Functions use the **UTC** time zone.
 
 1. Click **Functions** in the **Serverless** section of the side menu. The functions page displays.
 2. Click the relevant functions namespace.

serverless/jobs/how-to/manage-job-schedule.mdx

@@ -0,0 +1,33 @@
+---
+meta:
+  title: How to manage the scheduling of a Serverless Job
+  description: This page explains how to manage the scheduling parameters of a Serverless Job
+content:
+  h1: How to manage the scheduling of a Serverless Job
+  paragraph: This page explains how to manage the scheduling parameters of a Serverless Job
+dates:
+  validation: 2024-02-27
+  posted: 2024-02-27
+categories:
+  - serverless
+  - jobs
+---
+
+Job scheduling allows you to execute a Serverless Job on a recurring schedule, based on a [cron expression](/serveress/jobs/reference-content/cron-schedules), in the `* * * * *` format, using the desired time zone.
+
+<Macro id="iam-requirements" />
+
+<Message type="requirement">
+  - You have an account and are logged into the [Scaleway console](https://console.scaleway.com)
+  - You have [created a Serverless Job](/serverless/jobs/how-to/create-job-from-scaleway-registry/)
+</Message>
+
+1. Click **Jobs** in the **Serverless** section of the side menu. The jobs page displays.
+
+2. Click the name of the job you want to manage, then click the **Settings** tab.
+
+3. Scroll down to the **Job scheduling** section, and edit the cron expression and the time zone.
+
+<Message type="note">
+Refer to the [dedicated documentation](/serveress/jobs/reference-content/cron-schedules) for more information on cron scheduling and time zones.
+</Message>