PORTSMOUTH TIDE TABLES 2023-24 All times GMT. BST: +1 hour from 01:00 31 March - 02:00 27 October 2024 0 0 ENGLAND, SOUTH COAST, PORTSMOUTH. LAT 5048’N LONG 107’W ABLES TIME ZONE UT (GMT). TIMES & HEIGHTS OF HIGH & LOW WATER DEC 2023 KEY: Full Moon JAN 2024 BST add New Moon one hour TIME m TIME m TIME m TIME m TSMOUTH TIDE T POR 155 solenthandbook.com