Lisbon, Portugal is GMT +1 and it is in the Western European Summer Time or WEST Zone.
- GMT
Between October and March Portugal is on GMT and so does not add an hour. Any country to the east of GMT will always add an hour. Any country to the west of GMT will subtract an hour. This means that if GMT is 8:40pm then countries to the west will be 7:40pm and countries to the east will be 9:40pm.
- Portugal
During the summer months, Portugal is on the GMT +1 like the rest of the UK. This means that during March to October one adds an hour to the GMT time. If one lives in New York then one has to add five hours to the time in Portugal. This is because New York is GMT-4 and Portugal in summer is GMT+1, so there is a five hour difference.
Between October and March, when Portugal is on Western European Standard Time, then one adds only four hours to the time that it is in New York because Portugal is back to the GMT time.
Between October and March, when Portugal is on Western European Standard Time, then one adds only four hours to the time that it is in New York because Portugal is back to the GMT time.
There is a website: wwp.greenwichmeantime.com/ that has all the time zones that you might need to check on. It will tell you the current local times for most locations around the world including what it is in Portugal. This can be most helpful during daylight savings changes.
