New Year's Day
Ramadan Feast Eve (Estimated date)
Ramadan Feast (Eid al-Fitr) (Estimated date)
Ramadan Feast (Eid al-Fitr) (Estimated date)
Ramadan Feast (Eid al-Fitr) (Estimated date)
Sacrifice Feast Eve (Estimated date)
Sacrifice Feast (Eid al-Adha) (Estimated date)
Sacrifice Feast (Eid al-Adha) (Estimated date)
Sacrifice Feast (Eid al-Adha) (Estimated date)
Sacrifice Feast (Eid al-Adha) (Estimated date)
National Sovereignty and Children's Day
Commemoration of Atatürk, Youth and Sports Day
Victory Day
Republic Day Eve
Republic Day
  January
  February
  March
  April
  May
  June
  July
  August
  September
  October
  November
  December
 ‹ 1639
1640
1641 › 
# Date Public holiday
1Sunday, 1 January 1640 New Year's Day
2Tuesday, 24 January 1640 Ramadan Feast Eve (Estimated date)
3Wednesday, 25 January 1640 Ramadan Feast (Eid al-Fitr) (Estimated date)
4Thursday, 26 January 1640 Ramadan Feast (Eid al-Fitr) (Estimated date)
5Friday, 27 January 1640 Ramadan Feast (Eid al-Fitr) (Estimated date)
6Sunday, 1 April 1640 Sacrifice Feast Eve (Estimated date)
7Monday, 2 April 1640 Sacrifice Feast (Eid al-Adha) (Estimated date)
8Tuesday, 3 April 1640 Sacrifice Feast (Eid al-Adha) (Estimated date)
9Wednesday, 4 April 1640 Sacrifice Feast (Eid al-Adha) (Estimated date)
10Thursday, 5 April 1640 Sacrifice Feast (Eid al-Adha) (Estimated date)
11Monday, 23 April 1640 National Sovereignty and Children's Day
12Saturday, 19 May 1640 Commemoration of Atatürk, Youth and Sports Day
13Thursday, 30 August 1640 Victory Day
14Sunday, 28 October 1640 Republic Day Eve
15Monday, 29 October 1640 Republic Day