# Change System Time Manually

When your PBX cannot reach the Internet to sync its clock automatically, you can enter the date and time yourself. Setting the clock to your local time keeps the timestamps on system logs and call detail records (CDRs, the per-call records the PBX writes for reporting and billing) accurate and easy to match against real events.

:::note
While the PBX has Internet access it normally keeps its own clock in sync for you. Use the manual steps below only when it is offline or on an isolated network, or when the automatic time is clearly wrong.
:::

## Set the clock

1. Sign in to the PBX web portal and open **System > Date and Time**.
2. Under **Date and Time**, enter your local date and time:
   a. From the **Time Zone** drop-down, choose the zone you are in.
   b. Optionally, turn on **Daylight Saving Time** and adjust it to match your region.
3. Under **Display Format**, choose how dates and times appear:
   - **Date Display Format**: `Year/Month/Day`, `Month/Day/Year`, or `Day/Month/Year`.
   - **Time Display Format**: 12-hour or 24-hour.
4. Click **Save**, then **Apply**.
5. Reboot the PBX so the new time takes effect.

:::note
The **Time Zone** you pick is what keeps log and CDR timestamps aligned with your local clock. If it is wrong, every record will be offset and hard to reconcile later, so confirm it before saving.
:::

:::tip
Turn on **Daylight Saving Time** if your region observes it. The clock then shifts by itself in spring and autumn, so you do not have to come back and re-enter the time twice a year. The **Display Format** settings only change how the date and time are shown on screen, not the underlying clock, so set them to whatever your team reads most easily.
:::

:::caution
Rebooting the PBX in step 5 restarts phone service and drops any calls that are in progress. Schedule this for a maintenance window or a quiet period so you do not cut off active callers. The new time does not apply until the reboot finishes.
:::

## Result

Once the PBX restarts, it runs on the time you entered, and new log entries and CDRs are stamped accordingly.