QuantConnect / QuantConnect/Lean

Trading Calendar thinks some trading days are holidays

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Dominant language
C#
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Description

Expected Behavior

The TradingDay for 2020-11-11 should not be marked as a public holiday.

Actual Behavior

The TradingDay for 2020-11-11 is marked as a public holiday even though it was not.

Potential Solution

Probably a data issue? I don’t know whether this is a one-off issue or whether there are more inaccuracies.

Reproducing the Problem
trading_day = self.trading_calendar.get_trading_day(datetime(2020, 11, 11))
assert not trading_day.public_holiday
System Information

n/a

Checklist
  • I have completely filled out this template
  • I have confirmed that this issue exists on the current master branch
  • I have confirmed that this is not a duplicate issue by searching issues
  • I have provided detailed steps to reproduce the issue

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start from the trading_calendar.get_trading_day entry point and the TradingDay.public_holiday value used in the reproduction. Trace the holiday data for 2020-11-11, check whether related dates have the same issue, and verify that the assertion passes after the correction.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, python
Domain
backend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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