Is Helsinki open on Monday 31 December 2012?
No
No. Helsinki is closed on Monday 31 December 2012 for New Year's Eve. It reopens on Wednesday 2 January 2013.
New Year's Eve
See also Helsinki hours today and Helsinki holidays 2012
LSE
Xetra
Euronext Paris
SIX
NYSE
TSX
B3
TSE Tokyo
HKEX