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Cake day: January 28th, 2025

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  • No? UTC by definition doesn’t know time zones.

    Let’s say the European goes to work at 8 o’clock UTC. The American in this example goes to work 6 hours later at 14 o’clock UTC. Both now exactly when the other one is in office. Time zones aren’t needed here.

    Time zones are an invention to keep the zero hour (for hour counting) at about the same local time - midnight. Midnight was easier to determine that UTC (or GMT). A peasant could do it in a day without the help of expensive tools everywhere on Earth. As a matter of fact almost each city in medieval times had its own local time. To get that sorted out they where clustered into time zones.


  • Time to nerd this shit! 🥸

    There were several counting systems:

    • In Old Egypt and in the medieval times they counted 12 day hours from sunrise to sundown and another 12 night hours from sundown to sunrise. A lot of systems do/did that because one tracked the sun and the other tracked the moon and the stars. It’s more like as 12 + 12 hours system instead of a 24 hours system.
    • In the Babylonian system the day had 24 hours, beginning at sunrise. The name has nothing to do with the ancient Babylonians though. 🤷‍♂️
    • The Italian system was the same as the Babylonian system but began counting at sundown. This is also the case in the Hebrew and Islamic calendar. Btw that’s the reason why Christmas night starts at the 24th of December in some countries (like Germany) and the 25th of December in other countries (like USA). The former converted from the old date/time system to the modern done while the later just went ‘Nah! We’ll do what the Bible says.’
    • The ancient Babylonians had danna, double hours. Hence a day had 6 day and 6 night dannas.
    • Then there are still used 12 hour clock dividing the day in ante meridiem (before midday) and post meridiem (after midday). It is mainly used in Britain and countries that were ruled by the British Empire.
    • There’s the current 24 hour clock starting and ending at midnight.
    • There is the Julian Day where the counting -again- starts at sunrise. It is still used(!) in astronomy.
    • There is Rammesses II’s hour calendar where the number of day and night hours changed depending on the month. June-July had 18 day and 6 night hours. December-January had 6 day and 18 night hours. Why does a country near the equator need 18 day or night hours? It’s not that the day and night length change that much during the seasons. 🤷‍♂️
    • The Chinese calendar changed several times. Each day started and ended at midnight (like today) and initially was divided in 100 ke (1 ke = 14.4 minutes). Later that number changed to 120 (12 * 10), 108 (because 12 * 9) and 96 (12 * 8). When they also introduced double hours, ke became 15 minutes long. The double hours started counting at 23:00.
    • And many more.  
       

    Also it isn’t a bad idea to work less hours in winter so you can experience the sun at all.

    In the times before the light bulb work could only be done during the day. Candles made from beewax were too expensive for the peasants. If they used candles instead of kindling they were made from tallow and created a lot of smut and didn’t gave much light. That made them a bit unpopular. I wonder why? 👤
    At least in my country work days were divided in morning, midday, afternoon and night. You worked your field during the morning, went to market at midday, did handyman work and chores during afternoon and slept during night time.










  • Krik@lemmy.dbzer0.comtoSelfhosted@lemmy.worldDecentralized Search Engine
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    2 months ago

    Google was already shit for years. Its purpose nowadays is not to deliver whatever search results the user requested, it’s purpose is to keep the user dangling so that he clicks on one of the sponsored links - that’s money.

    And that, ladies and gentlemen, is the reason you won’t find anything anymore on Google.

    You can try DuckDuckGo. They are pretty open on what they do. The search engine is Bing and the maps come from Apple and you can chose your preferred AI from a list.

    I haven’t heard about the decentralized search engines. Are they any good? Or are they more in like a proof of concept stage?





  • Krik@lemmy.dbzer0.comtoSelfhosted@lemmy.worldProxmox setup - help needed
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    2 months ago

    Do I use BTRFS or ZFS? I tend to use ZFS because of its advantages when making backups. What would you do?

    Usually VMs are usually I/O starved therefore I would try to go as lightweight as possible and chose Ext4 or XFS (depending on what the VM is used for). The VMs can be backed up whole by Proxmox. You have more than enough space to do that and it’s considerably easier to set up. And honestly how big could the containers and VMs be? I guess the containers are 50-200 MB and a VM a few GBs. That’s almost nothing.

    Do I use QEMU/KVM virtual machines or LXC/LXD cointainers? Performance wise QEMU emulating the host architecture should be the way to go, right?

    LXC containers are way more lightweight than VMs. I depends on what you want to do. Docker and a file server work better in a VM so far but Pi-hole and Jellyfin run perfectly in a container.

    I shy away from running all services as Docker on the same machine for backup/restore purposes and rather have VMs per service. Is there anything wrong with this approach?

    I would go for LXC first. If that isn’t possible or too cumbersome I would try docker (in a VM) next and one-VM-per-service last as they need the most resources.

    I’d love to keep NextcloudPi (because it’d make it easy to migrate settings and files) and there’s an LXD container for it. Would you recommend doing a switch to Nextcloud AIO instead?

    Sorry, no idea.

    I’ve equipped the Deskmeet X300 with a WiFi card and antennas. AFAIU trying to use WLAN instead of LAN will create some trouble. Has anyone running Proxmox on a machine with WLAN insteal of LAN access successfully?

    I would always try to connect it to LAN.

    I’m aware that Proxmox comes with a firewall, but I don’t feel very confortable using a software firewall running on the same machine that hosts the virtual machines. Is this just me being paranoid or would you recommend putting a hardware firewall between the internet access and the Proxmox server?

    No idea. I wouldn’t mind a firewall container. If something breaks through you are fucked one way or the other. The firewall in your router isn’t much different than any other.
    You should always go for Wireguard or another VPN to access your network from the outside.

    What else should I think of, but haven’t talked about/asked yet?

    Helper scripts for beginners: https://community-scripts.github.io/ProxmoxVE/
    Just give them a look.

    And it seems you are ignoring Proxmox’ LXC. They are one of main reasons to pick that software.

    Edit: As an additional note: I ran about 6 or 7 VMs on a mini PC (Intel N100) with 16 GB RAM. RAM was almost used up and the cpu was at ~15 %.
    I then switched mostly to LXC and only one VM. The cpu was now at ~1% and RAM usage went down to 3 GB while still providing the same services as before.
    The power of containers, baby! :D




  • WHY DO YOU NEED MY DATA TO MAKE FIREFOX WORK???

    They don’t care about your actual data, they care about how Firefox is used. That’s an incredible important piece of information every developer needs to know.
    How else do you get to know, what’s working right and what doesn’t? How do you plan development for the next years if you don’t know what to develop?

    This is about throwing millions of $ at the right thing. If you miss you are fucked.