GMT vs MSK time zone comparison

How GMT and MSK compare

Moscow Standard Time runs three hours ahead of Greenwich Mean Time, the standard gap between London and Moscow. Russia abolished daylight saving in 2014, so MSK stays at UTC+3 year-round while the UK shifts between GMT (UTC+0) in winter and BST (UTC+1) in summer. The result is that the gap is 3 hours in UK winter and 2 hours in UK summer. The practical shared window is wide: 9 AM London is 12 PM Moscow in winter, both sides well into their working day. The London-Moscow corridor is geopolitically constrained as of 2026 — most Western firms have withdrawn from Moscow operations following 2022 — but where coordination remains (energy trading, hydrocarbon shipping, residual financial settlement, humanitarian and journalism contacts), the time-zone math is straightforward. Push the call later than 4 PM London (7 PM Moscow in winter) and Moscow is at end-of-day. Push it earlier than 8 AM London (11 AM Moscow) and London has not arrived. The 3-hour winter gap is small enough that London-Moscow coordination feels closer to London-CET than to London-IST in working pattern.

Working-hour overlap

Wide overlap from 9 AM to 4 PM London (12 PM to 7 PM Moscow in winter, 11 AM to 6 PM Moscow in summer).

When to schedule

Default to 10 AM London (1 PM Moscow in winter, 12 PM Moscow in summer) for cross-zone meetings. Both sides are well into their working day. For longer working sessions, 9 AM London (12 PM Moscow in winter) gives Moscow a buffer past lunch. For end-of-day reviews where Moscow needs to drive, 3 PM London (6 PM Moscow in winter) catches Moscow before commute mode. The 3-hour gap is small enough that almost any reasonable London hour works on the Moscow side, and the only meaningful trap is forgetting which direction the gap runs (Moscow is ahead).

Notable context

Pre-2022, Moscow was a major global financial center with London-Moscow corridors heavily used by oil and gas trading (BP-Rosneft, Shell-Gazprom), commodities (Glencore Russia operations, Trafigura Russia), and banking (Sberbank International had London operations, VTB Capital had London branches). Following the 2022 sanctions regime, most Western firms have withdrawn from Russia operations, and the London-Moscow corridor has shrunk dramatically. Residual coordination today is largely in hydrocarbon shipping settlement, humanitarian operations, journalism, and academic collaboration. Russia abolishing daylight saving in 2014 means the gap is unusually stable; it does not move twice a year the way most cross-zone gaps do.