I've seen a couple of other unresolved posts here about this issue. I'm pretty sure the restart announcement is not working properly.

For a few years my host was on GMT/BST timezone and the restart announcements worked perfectly. I recently moved to a new host which runs on UTC and now I'm having problems. The restart announcements are happening an hour early - GUIAnnouncements thinks it's on BST for some reason despite the system being on UTC. I've tried completely purging GUIAnnouncements and reinstalling fresh but the problem persists. I know I can simply add an hour in my config but that's not really a proper solution.

My config and mods list are below.

{
  "A List Of Available Colors To Use (DO NOT CHANGE)": {
    "Banner Colors": "Grey, Red, Orange, Yellow, Green, Cyan, Blue, Purple",
    "Text Colors": "White, Red, Orange, Yellow, Green, Cyan, Blue, Purple"
  },
  "General Settings": {
    "Adjust Vertical Position": 0.0,
    "Announcement Duration": 10.0,
    "Fade In Time": 0.5,
    "Fade Out Time": 0.5,
    "Font Size": 18
  },
  "Private New Player Announcements": {
    "Announcements List (Show On This Many Joins : List To Show)": {
      "1": [
        "1st Join {rank} {playername} New player announcement 1.",
        "1st Join {rank} {playername} New player announcement 2.",
        "1st Join {rank} {playername} New player announcement 3."
      ],
      "2": [
        "2nd Join {rank} {playername} New player announcement 1.",
        "2nd Join {rank} {playername} New player announcement 2.",
        "2nd Join {rank} {playername} New player announcement 3."
      ],
      "3": [
        "3rd Join {rank} {playername} New player announcement 1.",
        "3rd Join {rank} {playername} New player announcement 2.",
        "3rd Join {rank} {playername} New player announcement 3."
      ]
    },
    "Banner Color": "Grey",
    "Enabled": false,
    "Text Color": "White"
  },
  "Private Respawn Announcements": {
    "Announcements List": [
      "{playername} Respawn announcement 1.",
      "{playername} Respawn announcement 2.",
      "{playername} Respawn announcement 3."
    ],
    "Banner Color": "Grey",
    "Enabled": false,
    "Text Color": "White"
  },
  "Private Test Announcement": {
    "Adjust Vertical Position": 0.0,
    "Banner Color": "Grey",
    "Duration": 10.0,
    "Fade In Time": 0.5,
    "Fade Out Time": 0.5,
    "Font Size": 18,
    "Text Color": "White"
  },
  "Private Welcome Announcements": {
    "Banner Color": "Grey",
    "Delay": 0.0,
    "Duration": 20.0,
    "Enabled": false,
    "Show Welcome Back If Player Has Been Here Before": false,
    "Text Color": "White",
    "Welcome Back Text": "Welcome back {playername}! There are {playercount} player(s) online.",
    "Welcome Text": "Welcome {playername}! There are {playercount} player(s) online."
  },
  "Public Airdrop Announcements": {
    "Banner Color": "Green",
    "Enabled": false,
    "Show Location": false,
    "Text": "Airdrop en route!",
    "Text Color": "Yellow",
    "Text With Grid": "Airdrop en route to {grid}."
  },
  "Public Automatic Game Time Announcements": {
    "Announcement List (Show at this in game time : Announcements to show)": {
      "18:15": [
        "The in game time is 18:15 announcement 1.",
        "The in game time is 18:15 announcement 2.",
        "The in game time is 18:15 announcement 3."
      ],
      "00:00": [
        "The in game time is 00:00 announcement 1.",
        "The in game time is 00:00 announcement 2.",
        "The in game time is 00:00 announcement 3."
      ],
      "12:00": [
        "The in game time is 12:00 announcement 1.",
        "The in game time is 12:00 announcement 2.",
        "The in game time is 12:00 announcement 3."
      ]
    },
    "Banner Color": "Grey",
    "Enabled": false,
    "Text Color": "White"
  },
  "Public Automatic Real Time Announcements": {
    "Announcement List (Show at this local time : Announcements to show)": {
      "18:15": [
        "The local time is 18:15 announcement 1.",
        "The local time is 18:15 announcement 2.",
        "The local time is 18:15 announcement 3."
      ],
      "00:00": [
        "The local time is 00:00 announcement 1.",
        "The local time is 00:00 announcement 2.",
        "The local time is 00:00 announcement 3."
      ],
      "12:00": [
        "The local time is 12:00 announcement 1.",
        "The local time is 12:00 announcement 2.",
        "The local time is 12:00 announcement 3."
      ]
    },
    "Banner Color": "Grey",
    "Enabled": false,
    "Text Color": "White"
  },
  "Public Automatic Timed Announcements": {
    "Announcement List": [
      [
        "1st Automatic Timed Announcement 1",
        "1st Automatic Timed Announcement 2"
      ],
      [
        "2nd Automatic Timed Announcement 1",
        "2nd Automatic Timed Announcement 2"
      ],
      [
        "3rd Automatic Timed Announcement 1",
        "3rd Automatic Timed Announcement 2"
      ]
    ],
    "Banner Color": "Grey",
    "Enabled": false,
    "Show Every (HH:MM:SS)": "00:30:00",
    "Text Color": "White"
  },
  "Public Bradley APC Announcements": {
    "Destroyed": false,
    "Destroyed Banner Color": "Red",
    "Destroyed Text": "The APC has been destroyed.",
    "Destroyed Text Color": "White",
    "Destroyed With Destroyer Text": "{playername} got the last shot on the APC destroying it!",
    "Show Destroyer": false,
    "Spawn": false,
    "Spawn Banner Color": "Red",
    "Spawn Text": "An APC is patrolling the launch site!",
    "Spawn Text Color": "Yellow"
  },
  "Public Cargoship Announcements": {
    "Leave": false,
    "Leave Banner Color": "Blue",
    "Leave Text": "The cargoship is departing.",
    "Leave Text Color": "White",
    "Spawn": false,
    "Spawn Banner Color": "Blue",
    "Spawn Text": "Cargoship ahoy!",
    "Spawn Text Color": "Yellow"
  },
  "Public Chinook Announcements": {
    "Announce Crate Drops": false,
    "Crate Dropped Banner Color": "Red",
    "Crate Dropped Text": "The Chinook has dropped a crate!",
    "Crate Dropped Text Color": "Yellow",
    "Crate Dropped Text With Grid": "The Chinook has dropped a crate in {grid}.",
    "Despawn": false,
    "Despawn Banner Color": "Red",
    "Despawn Text": "The Chinook has left.",
    "Despawn Text Color": "White",
    "Destroyed": false,
    "Destroyed Banner Color": "Red",
    "Destroyed Text": "The Chinook has been taken down!",
    "Destroyed Text Color": "White",
    "Destroyed Text With Destroyer": "{playername} got the last shot on the Chinook taking it down!",
    "Show Crate Drop Location": false,
    "Show Destroyer": false,
    "Spawn": false,
    "Spawn Banner Color": "Red",
    "Spawn Text": "Chinook inbound!",
    "Spawn Text Color": "Yellow"
  },
  "Public Christmas Stocking Refill Announcement": {
    "Banner Color": "Green",
    "Enabled": false,
    "Text": "Santa has refilled your stockings. Go check what you've got!",
    "Text Color": "Red"
  },
  "Public Helicopter Announcements": {
    "Despawn": false,
    "Despawn Banner Color": "Red",
    "Despawn Text": "The patrol helicopter has left.",
    "Despawn Text Color": "White",
    "Destroyed": false,
    "Destroyed Banner Color": "Red",
    "Destroyed Text": "The patrol helicopter has been taken down!",
    "Destroyed Text Color": "White",
    "Destroyed Text With Destroyer": "{playername} got the last shot on the helicopter taking it down!",
    "Show Destroyer": false,
    "Spawn": false,
    "Spawn Banner Color": "Red",
    "Spawn Text": "Patrol Helicopter Inbound!",
    "Spawn Text Color": "Orange"
  },
  "Public Join/Leave Announcements": {
    "Announce Only Players With Permission": true,
    "Join Banner Color": "Grey",
    "Join Enabled": false,
    "Join Text": "{rank} {playername} has joined.",
    "Join Text Color": "White",
    "Leave Banner Color": "Grey",
    "Leave Enabled": false,
    "Leave Text": "{rank} {playername} has left.",
    "Leave Text Color": "White"
  },
  "Public Oil Rig Crate Hack Announcements": {
    "Banner Color": "Orange",
    "Enabled": false,
    "Hack Text": "An oil rig crate is being hacked!",
    "Hack Text With Large Oil Rig": "The large oil rig crate is being hacked!",
    "Hack Text With Small Oil Rig": "The small oil rig crate is being hacked!",
    "Specify Which Oil Rig": false,
    "Text Color": "Yellow"
  },
  "Public Player Banned Announcement": {
    "Banner Color": "Grey",
    "Enabled": false,
    "Text": "{playername} has been banned. {reason}.",
    "Text Color": "Red"
  },
  "Public Restart Announcements": {
    "Announce With Time Left (HH:MM:SS)": [
      "00:15:00",
      "00:10:00",
      "00:05:00",
      "00:01:00"
    ],
    "Banner Color": "Grey",
    "Cancelled Scheduled Restart Text": "The restart in {time} has been cancelled.",
    "Enabled": true,
    "Restart Announcement Text": "Restarting in {time}",
    "Restart At (HH:MM:SS)": [
      "04:00:00"
    ],
    "Restart My Server": false,
    "Suspended Restart Text": "The restart in {time} has been suspended.",
    "Text Color": "White"
  },
  "Third Party Plugin Support": {
    "Do Not Overlay LustyMap": false,
    "LustyMap Position (Left/Right)": "Left"
  }
}​

AntiCodeRaid
AutoDoors
AutoStashTraps
Backpacks
ChatPrefix
ChestStacks
ComponentBlocker
ConnectMessages
DeathNotes
EmptyLowFPS
EntityOwner
FixFireworks
FurnaceSplitter
GroupLimits
GUIAnnouncements
Ignore
Kits
LoadingMessages
LootBouncer
NavMeshErrorFix
NoFireBallDamage
NoFlykick
NoGiveNotices
NoMLRSMount
NoRaid
PlayerList
PrivateMessages
RemoverTool
SignArtist
SkinBox
SortButton
SteamChecks
SupplySignalAlerts
TimeOfDay
UpkeepDisplayFix
Voter​

The code literally grabs the system's current time. There's no messing with the time that is grabbed.

Then there is some simple subtraction of the current time from the next restart to determine the time left.

UTC is currently an hour behind GMT so I'd expect with the timezone change your announcements should be happening an hour later. So where before it was at 04:00 GMT it should now be at 05:00 GMT.

Thoughts?

Currently my server is on a UTC host. If I put 04:00:00 for the restart in the config it (incorrectly) makes the announcement at 03:00 UTC. If I want it to announce at 04:00 UTC I have to put 05:00:00 in the config.

I shouldn't have mentioned my previous host, it's irrelevant to the current issue.

Sorry for the late reply. UMod doesn't seem to email me for certain things anymore.

Can you copy and paste the following into Notepad, save it as GetSystemTime.cs then put it onto your server and run the command getsystemtime in the server console:

using System;

namespace Oxide.Plugins
{
    [Info("GetSystemTime", "JoeSheep", "1.0.0")]
    [Description("Gets the time of the system")]
    class GetSystemTime : RustPlugin
    {
        [ConsoleCommand("getsystemtime")]
        void CMD(ConsoleSystem.Arg arg)
        {
            Puts("Timezone: " + TimeZone.CurrentTimeZone.ToString() + " | Current time: " + DateTime.Now.ToLongTimeString());
        }
    }
}

This will print out the current timezone and time of the system the server is running on. Send me back a screenshot of what it shows.

This correctly shows the time in UTC