XASX missing 2 days

[ValueRaider]

XASX appears to be missing 2 days, because Yahoo Finance returns data for them: 1988-04-25, 1989-06-21.

No holidays nearby so maybe a timezone/DST problem? Mapping 0am to 23pm day before?

from datetime import date, timedelta
import exchange_calendars as xcal
import yfinance as yf

day = date(1988, 4, 25)
# day = date(1989, 6, 12)
exchange = 'ASX'

cal = xcal.get_calendar('X'+exchange)
try:
	cal.schedule.loc[day]
except KeyError:
	in_xcal = False
else:
	in_xcal = True

dat = yf.Ticker('BHP.AX')
df = dat.history(start=day-timedelta(days=7), end=day+timedelta(days=7))
try:
	df.loc[str(day)]
except KeyError:
	in_yf = False
else:
	in_yf = True

if in_yf and not in_xcal:
	print(f"XCAL BUG: Day {day} in Yahoo Finance but missing from xcal exchange {exchange}")

[Marcus Read]

Hi @ValueRaider,

1988-04-25 is the Anzac Day holiday. Not sure why yf has a price for it?
1989-06-21 is in the XASX schedule...? Did you mean 1989-06-12, which was the Queen's Birthday holiday?

[ValueRaider]

You're right on both, I was misreading the holiday definitions.