Related Clues:

• Clock std.
• Prime meridian std.
• Standard setting at 0° long.
• Tax-payer's acronym
• Despised tax, for short
• Setting at 0 degrees long.
• Tax acronym
• Standard setting at 0 degrees long.
• Cousin of HST
• Clock std
• Fed. sales tax
• Prime meridian std
• Hated tax, abbr
• Clock-setting std
• Astron. clock setting