Sim weekend briefing, Sunday 25 October: clocks back, Le Mans Ultimate 24h, IMSA at Watkins Glen and VATSIM events

The clocks went back overnight, so the UK is on GMT again. That also means UK time and Zulu time now read the same, which makes Sunday's online events much easier to plan. Here's what's on for Sunday 25 October. All times are GMT unless stated.

Clocks went back

At 02:00 BST on Sunday 25 October, UK clocks went back an hour to 01:00 GMT. If your PC or console didn't change on its own, check it before you join anything.

Le Mans Ultimate: the 24 Hours of Le Mans Special Event

Saturday's start slot of Le Mans Ultimate's 24 Hours of Le Mans Special Event opened at 13:30 UTC (14:30 BST) on Saturday 24 October, with qualifying first. It's a full 24-hour team race, so it was running through Sunday morning.

IMSA Esports Global Championship: Round 3 at Watkins Glen

Round 3 of the IMSA Esports Global Championship is at Watkins Glen International on iRacing on Sunday 25 October. iRacing says 52 teams are entered (20 in GTP and 32 in GTD) for a 2 hour 40 minute race, with points on offer in both qualifying and the race.

The pre-race show starts at 1:45 p.m. ET and race coverage at 2:00 p.m. ET, live on IMSA's and iRacing's social channels.

VATSIM on Sunday

• The Mid Atlantic Link, from the VATSIM Europe division: flights to Iceland, 13:00 to 19:00 GMT, at Keflavik (BIKF), Reykjavik (BIRK) and Akureyri (BIAR). https://my.vatsim.net/events/the-mid-atlantic-link-2
• Poland Sunday: 18:00 to 21:00 GMT at Warsaw Chopin (EPWA), Warsaw Modlin (EPMO), Łódź (EPLL) and Rzeszów (EPRA), according to the official VATSIM event listing. https://my.vatsim.net/events/poland-sunday-70
• Hannover Sunday, from VATSIM Germany, part of the VATSIM Europe division: 18:30 to 21:00 GMT at Hannover (EDDV). https://my.vatsim.net/events/hannover-sunday-72
• Stuttgart Sunday, from VATSIM Germany, part of the VATSIM Europe division: 19:00 to 21:00 GMT at Stuttgart (EDDS). https://my.vatsim.net/events/stuttgart-sunday-172

IVAO on Sunday

• Frankfurt Darkness, from IVAO Germany: 16:14 to 21:00 GMT. The unusual start time is because the event begins at sunset. https://ivao.events/5571
• Cyrus the Great (IVAO Iran and IVAO HQ): 16:00 to 19:00 GMT. https://ivao.events/5560
• Ezeiza RFO 2026 (IVAO Argentina and IVAO HQ): 19:00 to 22:00 GMT. https://ivao.events/5378

Event details can change, so check each organiser's event page before you fly or race.

Sources: GOV.UK (https://www.gov.uk/when-do-the-clocks-change); Le Mans Ultimate (https://lemansultimate.com/special-events-calendar-q3-4-2026/); iRacing (https://www.iracing.com/2026-imsa-esports-global-championship-watkins-glen-international-round-3-preview/); VATSIM event pages linked above; IVAO (https://ivao.events/5571, https://ivao.events/5560, https://ivao.events/5378).

Images: Le Mans Ultimate; VATSIM Germany.

Watch on TikTok: https://tiktok.com/@laptolanding/video/7700535482026970400
Watch on Instagram: https://www.instagram.com/reel/De6Y6oxEv2C/