Is Helsinki open on Thursday 21 May 1998?
No
No. Helsinki is closed on Thursday 21 May 1998 for Ascension Day. It reopens on Friday 22 May 1998.
Ascension Day
See also Helsinki hours today and Helsinki holidays 1998
LSE
Xetra
Euronext Paris
SIX
NYSE
TSX
B3
TSE Tokyo
HKEX