Basin | Season start | Season end |
NORTHERN HEMISPHERE | ||
Northwest Pacific | 1 April | 31 January |
Northeast Pacific | 15 May | 30 November |
Central Pacific | 1 June | 30 November |
North Atlantic | 1 June | 30 November |
North Indian | 1 April | 31 December |
SOUTHERN HEMISPHERE | ||
Australia & Southwest Pacific South Indian | 1 November | 30 April |