If a national holiday falls on a Sunday, the following Monday will also be a holiday.
New Year 1 January
Coming of Age Second Monday of January
National Foundation Day 11 February
Spring Eqinox Day 20 March?
Showa Day 29 April
Constitution Day 3 May
Greenery Day 4 May
Children’s Day 5 May
Marine Day Third Monday of July
Respect for the Aged Day Third Monday of September
Autumnal Equinox Day Around 23 September
Health and Sports Day Second Monday of October
Culture Day 3 November
Labour Thanksgiving Day 23 November
Emperor’s Birthday 23 December