It's impossible to force them in 24 hours, unless they have large buds already. You might be able to find some containers of already-blooming ones at the grocery store or garden center though.
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To be yourself in a world that is constantly trying to make you something else is the greatest accomplishment ~ {Ralph Waldo Emerson}
yikes - i'm pretty sure that's impossible. forcing bulbs usually refers to doing it when they're not in season, or indoors, and it takes days at least.
Depending how tightly closed the bud if it may not work, but keeping them in a warm room and /or putting them in the sun helps move things along (also make sure they're properly watered)
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"I base most of my fashion taste on what doesn't itch." - G. Radner
Also, try putting them in hot instead of cold water. That will help.
ETA: Here, I found this.
Dear Bridget, What can you do to rose buds to get them to open faster? We have some roses that we are getting ready to put into some arrangements for our niece's wedding and will only have one night to get them to go from bud to bloom. Any suggestions?- Julie - Miami, FL
Julie, Use warm water (keep it warm by changing it every hour or so) with floral preservative and turn up the thermostat or use a hair dryer (indirectly only, not directly) to increase the air temperature. Warm, not hot, water and warm air temperature will help those buds open faster. - Bridget