Related Clues:

• Summer clocks are set to it: Abbr.
• ''Spring forward'' clock setting: Abbr.
• Small snake
• Summer-setting letters
• Daylight saving arrangement, abbr.
• Aug. hours
• Sept. clock setting
• Snake that does sums?
• It ends every Nov.
• When clocks are set ahead: Abbr.
• One doing simple math
• When to spring forward (Abbr.)
• One trying to get sum?
• "Spring forward, fall back" abbr.
• Forward-moving occasion?: Abbr.