Black Thursday in Iron Soul Dungeon is a recurring special event that typically appears on the last Thursday of each month, with the next scheduled occurrence falling on the final Thursday of the current month. You enter the dungeon through the standard dungeon portal, and the event runs for a 24-hour window starting at midnight server time. This article explains the exact schedule, how the event works, what rewards you can expect, and answers common questions about timing and participation.
Formula
The calculator above estimates two things: the number of days until the next Black Thursday event and how many dungeon runs you can fit into the event window. The first output uses the formula:
Days until next event = Days since last event – (Event duration in hours / 24)
Where:
- Days since last event (d) is the number of full days that have passed since the previous Black Thursday ended.
- Event duration (t) is the length of the event in hours, typically 24.
- The result (next) is the estimated days remaining until the next event starts, assuming the event recurs on a fixed monthly cycle.
The second output uses:
Possible runs = floor(Event duration in hours / 1.5)
This assumes an average run takes about 1.5 hours, which is a common estimate for a full clear including boss fights and loot collection. The floor function rounds down to the nearest whole number, since you cannot start a partial run.
Worked Example
Using the default values from the calculator:
- Event duration (t) = 24 hours
- Days since last event (d) = 28 days
First, calculate the days until the next event:
Days until next event = 28 – (24 / 24) = 28 – 1 = 27 days
Next, calculate the possible runs:
Possible runs = floor(24 / 1.5) = floor(16) = 16 runs
So with a 24-hour event and a 28-day gap, you have roughly 27 days until the next Black Thursday, and you can complete about 16 runs if each takes 1.5 hours.
What Is Black Thursday in Iron Soul Dungeon?
Black Thursday is a limited-time dungeon event in the game Iron Soul Dungeon, a fantasy-themed dungeon crawler. Unlike the regular daily dungeons that rotate through a fixed weekly schedule, Black Thursday is a special occurrence that appears on the calendar once a month. The event features enhanced drop rates for rare items, increased experience points, and sometimes a unique boss that only spawns during the event window.
The name “Black Thursday” likely derives from the tradition of “Black Friday” sales, but in this context it signifies a darker, more challenging dungeon variant. The dungeon itself is visually reskinned with darker textures, and enemies have higher health and deal more damage compared to the standard version. Players who complete the dungeon on Black Thursday receive exclusive rewards that are not available at any other time.
How the Schedule Works
The Black Thursday event follows a predictable monthly pattern, but the exact date shifts because it is tied to the last Thursday of each month. Since months have different numbers of days, the date of the last Thursday varies between the 22nd and the 31st. For example, if the last day of the month falls on a Wednesday, the last Thursday is the day before (the 30th or 31st). If the month ends on a Friday, the last Thursday is the 29th or 30th.
The event starts at midnight server time on that Thursday and runs for exactly 24 hours, ending at midnight on Friday. Server time is typically based on the game’s official server location, which is usually listed in the game’s settings or on the official website. Players in different time zones will experience the event at different local times, so it is important to check the server time conversion.
To find the exact date for the current month, you can look at the in-game calendar, which usually marks the event with a special icon. Alternatively, the game’s official social media channels announce the schedule a few days in advance. If you miss the event, you will have to wait until the next month’s last Thursday.
How to Participate
Participating in Black Thursday is straightforward. Follow these steps:
- Ensure your character is at least level 20, as the event dungeon has a minimum level requirement.
- Gather a party of up to five players. The dungeon can be soloed, but it is significantly harder and takes longer.
- Travel to the dungeon entrance, which is located in the main hub city. The portal glows purple during the event.
- Select “Black Thursday” from the dungeon list. You will see a countdown timer showing how much time remains in the event.
- Enter the dungeon and defeat the final boss. You have 90 minutes to complete the run before the instance resets.
Each run consumes a dungeon key, which can be purchased from the in-game store or obtained as a drop from regular dungeons. You can hold a maximum of 10 keys at a time, so plan your runs accordingly if you want to maximize your rewards during the 24-hour window.
Rewards and Loot Table
The rewards for Black Thursday are significantly better than the regular dungeon. The loot table includes:
- Epic and legendary gear pieces with higher item levels than normal drops.
- A unique cosmetic mount, the “Shadowsteed,” which has a 1% drop chance from the final boss.
- Black Thursday exclusive crafting materials, such as “Void Essence,” used to craft event-specific weapons.
- Double experience points for the entire run, which is especially useful for leveling alt characters.
- A guaranteed chance to drop a “Dark Soul Shard,” a currency that can be exchanged for event rewards at the vendor in the hub.
The drop rates are tuned to be generous compared to regular dungeons, but the difficulty is also higher. It is recommended to bring a balanced party with a tank, healer, and damage dealers. Communication is key, as some boss mechanics require coordination to avoid party wipes.
Common Mistakes and Misconceptions
One common mistake is assuming the event runs on the first Thursday of the month. It is always the last Thursday, which can catch players off guard if they do not check the calendar. Another misconception is that the event lasts for the entire day of Thursday, but it actually starts at midnight and ends at midnight, so if you log in at 11 PM on Thursday, you only have one hour left.
Players also often underestimate the time needed for a full run. While the average is 1.5 hours, a poorly coordinated party can take over 2 hours, and the instance resets after 90 minutes if you do not finish. This means you must complete the run within 90 minutes or you will be kicked out and lose your key. To avoid this, make sure your party has adequate gear and knows the boss mechanics before entering.
Another frequent error is forgetting to bring enough dungeon keys. Since you can only hold 10 keys, and each run consumes one, you cannot do more than 10 runs in a single event unless you purchase additional keys from the store. The calculator above assumes an average of 1.5 hours per run, which gives 16 runs in 24 hours, but the key limit reduces that to 10 in practice.
Frequently Asked Questions
What time does Black Thursday start?
Black Thursday starts at midnight server time on the last Thursday of the month. Server time is usually displayed in the game’s settings, and the event countdown in the dungeon menu shows the exact remaining time. If you are in a different time zone, convert server time to your local time to avoid missing the start.
Can I solo Black Thursday?
Yes, you can solo the dungeon, but it is not recommended for most players. The enemies have significantly more health and deal more damage than the normal version, and the final boss has mechanics that are easier to manage with a group. A well-geared player at max level can solo it, but it will take longer than the 90-minute instance timer, so it is only feasible if you have exceptional gear and consumables.
How often does Black Thursday occur?
Black Thursday occurs once per month, on the last Thursday of the month. This means there are 12 events per year, but the exact date shifts because the last Thursday of a month can fall anywhere from the 22nd to the 31st. The in-game calendar is the most reliable source for the exact date.
Are the rewards worth the difficulty?
For most players, yes. The epic and legendary gear drops are among the best in the game, and the exclusive mount and crafting materials are only available during this event. The double experience is also valuable for leveling. However, if you are undergeared or short on time, it may be more efficient to run regular dungeons instead, as the higher failure rate can waste keys and time.
What happens if I miss the event?
If you miss Black Thursday, you will have to wait until the next month’s last Thursday. There is no catch-up mechanic for missed events, and the exclusive rewards do not return until the next occurrence. The only exception is if the developers announce a special make-up event, which has happened rarely in the past, but you should not rely on it.