16 Mar 2020
Promo: Spring Sale
Bug: All countdown clocks are wrong, as usual.

16 Mar 2020
Promo: https://www.gog.com/promo/xcom2
Bug: Countdown clock is wrong, as usual.

Both fixed.

17 Mar 2020
Promo: https://www.gog.com/promo/20200317_promo_launch_stellaris_federations
Bug: Countdown clock is wrong, as usual.

25 Mar 2020
Promo: https://www.gog.com/promo/20200325_promo_launch_iron_danger
Bug: Countdown clock was wrong, never fixed

6 Apr 2020
Promo: https://www.gog.com/promo/20200406_no_mans_sky
Bug: Countdown clock was wrong, never fixed

GOG should hire you, maybe then it will work as it should. You deserve a medal.

Cheers

15 May 2020
Promo: https://www.gog.com/promo/20200515promo_launch_higurashi_when_they_cry_ch8
Bug: Countdown clock is wrong, as usual.

GOG refused to fix the obvious bug.

UPDATE
20 May 2020
Promo: https://www.gog.com/promo/20200520_promo_launch_northgard
Bug: Countdown clock was wrong, never fixed.

26 May 2020
Promo: https://www.gog.com/promo/20200526_age_of_wonders_planetfall_sale
Bug: Countdown clock is wrong, as usual.

1 Jun 2020
Promo: THE LAST BLADE 2
Bug: Countdown clock is wrong, as usual.

GOG Support ticket #654516

15 Jun 2020
Promo: https://www.gog.com/promo/20200515_crying_suns_sale
Bug: Countdown clock is wrong, as usual. And the data tag "0515" is also wrong.

18 Jun 2020
Promo: 20200618_launch_promo_west_of_dead_path_of_the_crow
Bug: After 1 or 2 hours GOG removed it entirely

24 Jun 2020
Promo: https://www.gog.com/promo/20200624_children_of_morta_sale
Bug: Countdown clock was wrong, never fixed.

24 Jun 2020
Promo: https://www.gog.com/promo/20200624_midweek_sale
Bug: Countdown clock was wrong, never fixed.

26 Jun 2020
Promo: https://www.gog.com/promo/20200626_launch_promo_dungeons_3_complete
Bug: Countdown clock was wrong, never fixed.

1 Jul 2020
Promo: Drox Operative 1 & 2
Bug: GOG officially announced the promo but both games have zero discount.

24 Jul 2020
Promo: https://www.gog.com/promo/20200724_launch_promo_the_uncertain_last_quiet_day
Bug: Countdown clock is wrong, as usual.

22 Jul 2020
Promo: https://www.gog.com/promo/20200722_launch_promo_vagrus_banner_saga_iii
Bug: Countdown clock was wrong, and is still wrong after GOG tried to fix it. The countdown clock is still one day short now.

27 Jul 2020
Promo: The Waylanders
Bug: The sale stopped 1 week earlier. GOG Support ticket #712762

GOG never fix the one-day-short bug.

6 Aug 2020
Promo: https://www.gog.com/promo/20200806_launch_promo_bridge_constructor
Bug: Countdown clock is wrong, as usual.

GOG never fix the bug.

13 Aug 2020
Promo: https://www.gog.com/promo/20200813_promo_launch_battle_brothers_blazing_deserts
Bug: Countdown clock is wrong, as usual.

13 Aug 2020
Promo: https://www.gog.com/promo/20200813_dying_light_sale
Bug: Countdown clock is wrong, as usual.

20 Aug 2020
Promo: https://www.gog.com/promo/20200820_launch_promo_chef_a_restaurant_tycoon
Bug: Countdown clock was wrong, never fixed.