Changing the clock during sex

• How long would coitus take if a couple began at 2:58 on the night a clock is switched one hour back at 3am?

• Maybe this would solve this kinds of crisis (from Kinsey researches): "A fifth of males had first intercourse by the time they were 16 years old, married women were having sex 2.2 times a week by the age of 30, foreplay lasted between 4-10 minutes for around a third of couples, 40% of males preferred making love in the light and 47.5% of men ejaculated less than five minutes after sex began. (Kinsey speculated that for perhaps three-fourths of all males, orgasm was reached within two minutes after initiation of coitus, and reported this as a frequent source of marital conflict).
• Some more interesting sex facts: Here and here(women).