Just remember than on Sunday we have got daylight savings in The European Union area so we have these factors to consider:

- In Europe the clock adds 1 hour. (Spring forward)
- Difference time between EST (New York) and London Time is 5 hour again.
- London Time = GMT + 1- Western European Time (Frankfurt)= GMT +2

General Information:

Spring forward, Fall back

During DST, clocks are turned forward an hour, effectively moving an hour of daylight from the morning to the evening.

	United States			European Union
Year	DST Begins at 2 a.m.	DST Ends at 2 a.m.		Summertime period begins at 1 a.m. UT	Summertime period ends at 1 a.m. UT
2005	April 3	October 30		March 27	October 30
2006	April 2	October 29		March 26	October 29
2007	March 11	November 4		March 25	October 28
2008	March 9	November 2		March 30	October 26
2009	March 8	November 1		March 29	October 25
2010	March 14	November 7		March 28	October 31
2011	March 13	November 6		March 27	October 30

General information about “Daylight saving time”:

Although not used by most of the world’s people, daylight saving time is common in high latitudes. DST used DST no longer used DST never used

Daylight saving time (DST; also summer time in British English—see Terminology) is the convention of advancing clocks so that afternoons have more daylight and mornings have less. Typically clocks are adjusted forward one hour near the start of spring and are adjusted backward in autumn. Modern DST was first proposed in 1907 by the English builder William Willett. Many countries have used it since then; details vary by location and change occasionally.

The practice is controversial. Adding daylight to afternoons benefits retailing, sports, and other activities that exploit sunlight after working hours, but causes problems for farming, entertainment and other occupations tied to the sun. Traffic fatalities are reduced when there is extra afternoon daylight; its effect on health and crime is less clear. Although an early goal of DST was to reduce evening usage of , formerly a primary use of electricity, modern heating and cooling usage patterns differ greatly, and research about how DST currently affects energy use is limited and often contradictory

DST’s occasional clock shifts present other challenges. They complicate timekeeping and can disrupt meetings, travel, billing, recordkeeping, medical devices, and heavy equipment. Many computer-based systems can adjust their clocks automatically, but this can be limited and error-prone, particularly when DST rules change.

Source: wikipedia