The Forum for National Consensus, a government-led council of business and citizens' groups responsible for the effort, says "La Hora sin Demora," or "Time without Delay," will begin with a nationally televised ceremony in Lima on March 1 at noon. Sharp.
Sirens will sound and church bells will ring out, alerting 27 million Peruvians to synchronize their watches.
But short of hoping that latecomers will be shamed into mending their ways, the campaign offers no rewards for compliance or penalties for tardiness.
Schools, businesses, and government institutions will be asked to stop tolerating "hora peruana," or "Peruvian time," which usually means an hour late.
"The goal is for citizens in general, not just public officials, to undergo a change in mental attitude to start fulfilling their obligations," Cabinet chief Jorge del Castillo said.
One problem, according to a poll by Apoyo, Peru's leading pollster, is that most Peruvians think it's the other guy who's always late.
Nearly 80 percent of respondents said they are punctual, but only 3 percent think others are too.
It's a vicious cycle, said publicist José Centurión.
"If you set the time for 3, you think 3:15 is OK," he said. "The problem is that if you think everyone else is going to be late, you are not going to show up on time."
At an upscale restaurant in Lima's financial district, customers make lunch reservations but rarely show up on time, manager José Meléndez says.
Former president Alejandro Toledo showed up so late to events, sometimes by two hours, that Peruvians coined the phrase "Cabana time," referring to the mountain village where he was born.
While most elected leaders follow timetables to the minute -- President Clinton was a famous exception -- Toledo was late for even the inauguration of his successor, Alan García, last July. He took 45 minutes to travel four blocks through swarms of supporters, keeping dozens of foreign dignitaries waiting. Peruvians joked that he simply couldn't part with power.
"Every time ex-president Toledo arrived at a meeting on 'Cabana time' it showed his lack of respect for everyone else's time," said Jorge Bruce, a psychoanalyst and social commentator. "He took pleasure in having so many people waiting for him. Taking up someone else's time fed his self-esteem."
Toledo, who now lives in California, refused to be interviewed.
García, on the other hand, is a stickler for punctuality. So is Alicia Lorenzo, 49, who has run a snack kiosk for 30 years.
She says she arrives at work at 6 a.m. "on the dot" to receive deliveries and have snacks ready to go.
Does she think the anti-mañana initiative will work? "It depends on the government," she said.
"They have to set the example."