# How to sync RTC to UTC in voxl2?

Source: https://forum.modalai.com/topic/2817/how-to-sync-rtc-to-utc-in-voxl2
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2023-11-03 16:22:00 UTC by kay.han
Replies: 2 · Views: 449

## kay.han · 2023-11-03 16:22:00 UTC

Hello, 

I am using voxl2. Whenever I connect the battery, the device resets the RTC(Real Time Clock) to 1970-01-01. This is understandable. 

My issue is that I tried to sync the RTC to UTC using several ways, but I couldn't. **Can I know the how to sync the RTC to the UTC?**

![c596d8db-962e-4332-ad61-278fdbf4be27-image.png](https://forum.modalai.com/assets/uploads/files/1699026990891-c596d8db-962e-4332-ad61-278fdbf4be27-image.png) 

I tried to use "$ sudo timedatectl set-local-rtc 0", it didn't work.
![38ef0769-e9be-47a3-b9a5-ecd52f488939-image.png](https://forum.modalai.com/assets/uploads/files/1699027184960-38ef0769-e9be-47a3-b9a5-ecd52f488939-image.png) 

Another approach is using hwclock, but it didn't work either. 
![57757204-a47b-498e-b86b-8dfcf4dad1e6-image.png](https://forum.modalai.com/assets/uploads/files/1699027926693-57757204-a47b-498e-b86b-8dfcf4dad1e6-image.png) 

The last approach is the below command, but I met permission denied, even though I am a root user. 
![091151ba-0d99-4270-af97-57ead381a201-image.png](https://forum.modalai.com/assets/uploads/files/1699028268879-091151ba-0d99-4270-af97-57ead381a201-image.png) 

How can I RTC to UTC?

Thanks,
Kay

## Reply by Eric Katzfey (ModalAI staff) · 2023-11-03 22:02:12 UTC

@kay-han VOXL2 does not have an RTC

## Reply by kay.han · 2023-11-06 14:55:59 UTC (in reply to Eric Katzfey)

@Eric-Katzfey Oh, do you mean I can see the "RTC time" by timedatectl, but it doesn't mean voxl2 has the RTC? I see. Thank you for your answer.