| 1/1/1977, Sat | New Year's Day |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 2/21/1977, Mon | Carnival/ Rose Monday |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 2/22/1977, Tue | Carnival/ Shrove Tuesday |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 4/3/1977, Sun | Palm Sunday |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 4/7/1977, Thu | Holy Thursday |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
- Note
- Banks are not closed per Bank of Portugal.
|
| 4/8/1977, Fri | Good Friday |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 4/10/1977, Sun | Easter |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 4/25/1977, Mon | Liberty Day |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 5/1/1977, Sun | Labor Day |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 6/9/1977, Thu | Corpus Christi |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 6/10/1977, Fri | Portugal Day |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 6/12/1977, Sun | Festa de Lisboa Parade |
- Religion
- –
- Disrespectful to Hold an Event
- –
- Note
- LB5 new for 2003
Huge parade down Central Avenue. Culmination of 3 week Festa de Lisboa
|
| 6/13/1977, Mon | Lisbon's Day/St. Anthony's Day |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
- Note
- 1999 Businesses chose to open or not. Lisbon Saint’s Day.
|
| 6/23/1977, Thu | St. John the Baptist Eve |
- Religion
- –
- Disrespectful to Hold an Event
- –
- Note
- Huge fireworks display
|
| 6/24/1977, Fri | St. John the Baptist Day |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
- Note
- Porto saint’s day. This is observed in Porto and Braga ONLY.
1999 Businesses choose to open or not
|
| 8/15/1977, Mon | Assumption |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 10/5/1977, Wed | Republic Day |
- Religion
- –
- Disrespectful to Hold an Event
- –
- Note
- *New Addition
|
| 11/1/1977, Tue | All Saints' Day |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 12/1/1977, Thu | Independence Day/Youth Day |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 12/4/1977, Sun | Lisbon International Marathon |
- Religion
- –
- Disrespectful to Hold an Event
- –
- Note
- Foot race
|
| 12/8/1977, Thu | Immaculate Conception |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 12/24/1977, Sat | Christmas Eve |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 12/25/1977, Sun | Christmas Day |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 12/31/1977, Sat | New Year's Eve |
- Banks Closed
- PM
- Religion
- –
- Disrespectful to Hold an Event
- –
|