python - Rotate minor ticks in matplotlib

Question

I am plotting the following chart :

with the following code:

fig, ax = plt.subplots(figsize=(20, 3))
mpf.candlestick_ohlc(ax,quotes, width=0.01)
ax.xaxis_date()
ax.xaxis.set_minor_locator(mpl.dates.HourLocator(interval=4) )
ax.xaxis.set_minor_formatter(mpl.dates.DateFormatter('%H:%M')) 
plt.xticks(rotation = 90)

plt.grid(True)
plt.show()

I would like to also rotate the minor ticks: How would i do that?

Subsidiary question is there a way to rotate both major and minor tick with a single command?

Answer 1

You may rotate by code of one line plt.setp(ax.xaxis.get_minorticklabels(), rotation=90).