It will last until 10:00 Moscow time tomorrow (September 10).
Actual promotional codes for the Russian Federation:
350/3700 rub: POKALETO350
400/4500 rub: POKALETO400
750/7000 rub: POKALETO750
Also note that if you have not entered the mob for several days. application, it's worth taking a look (check the profile and just browse the product pages) - they can give a coupon of 100/500 rubles.
But not everyone is given.