Is TWSE open on Monday 30 January 2017?

No. TWSE is closed on Monday 30 January 2017 for Chinese New Year. It reopens on Thursday 2 February 2017.

Chinese New Year

Related markets on 30 Jan 2017

TSE Tokyo	09:00–15:00
HKEX	The third day of Chinese New Year
SSE	Chinese New Year (Spring Festival)
KRX	Seollal (New Year's Day by the lunar)
NSE	09:15–15:30
SGX	Chinese New Year (observed)
ASX	10:00–16:00
NYSE	09:30–16:00
Nasdaq	09:30–16:00
TSX	09:30–16:00