Looking for an Add-on to Modify Timestamps

[qudtls]

Could you recommend a simple timestamp modification add-on for the Basilisk browser?
I need to hide the timezone of my operating system for certain reasons.
Thank you in advance for your reply.

[Basilisk-Dev]

If you are on Linux or FreeBSD you can do something like this. You can also do it on MacOS if you cd into the Contents/MacOS directory inside of Basilisk.app. I have no idea if this works for Windows.

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TZ=UTC ./basilisk

I don't know of any extensions to change this but I can see why that'd be a useful feature for both privacy and for development.

[adoxa]

Setting TZ works, but not in that manner, you have to set it directly.

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set TZ=UTC
start basilisk

(That's assuming Basilisk is in App Paths, don't remember if the installer does that or I did it myself.)

[therube]

You can check here, https://webbrowsertools.com/timezone/.

[adoxa]

Here's what that reports using Basilisk/Windows. Default (no TZ set):

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Time on Server	Mon, 03 Mar 2025 23:57:42 GMT
Time on Local Machine	Tue Mar 04 2025 10:20:57 GMT+1000 (E. Australia Standard Time)
Time from Intl.DateTimeFormat #1	Tuesday, March 4, 2025 at 10:20:57 AM GMT+10
Time from Intl.DateTimeFormat #2	Tuesday, 4 March 2025, 10:20:57 am Australian Eastern Standard Time
Internet Beat	around @56
Timezone	Australia/Brisbane
Timezone Offset	-600 minutes

As expected (although I'm sure when I did this a bit earlier the Beat was @40).

Setting TZ=UTC:

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Time on Server	Mon, 03 Mar 2025 23:57:42 GMT
Time on Local Machine	Tue Mar 04 2025 00:19:34 GMT+0000 (UTC)
Time from Intl.DateTimeFormat #1	Tuesday, March 4, 2025 at 10:19:34 AM GMT+10
Time from Intl.DateTimeFormat #2	Tuesday, 4 March 2025, 10:19:34 am Australian Eastern Standard Time
Internet Beat	around @55
Timezone	Australia/Brisbane
Timezone Offset	0 minutes

So DateTimeFormat still has the proper value, as does Timezone (and Beat, I guess). That suggests to properly spoof it you'd have to modify system time itself (in the OS or hooking the calls or direct browser support).