Time

53 decades

Yup. A decade is ten years. A century is 100 years. 5 centuries are 500 years so 500 divided by 10 is 50. Add the three other decades and you get 53.

108 hours

It is ahead of the time of Italy.

25 hrs

60 minutes = 1 hour so 10 minutes = 10/60 hours = 1/6 hours.

1/9th

one day on Earth is 24 hours so it's not even 1.

in theory to create a time machine you have to either create a wormhole and loop it into itself at a latter time or generate enough power to fold spacetime in on itself with you in the center. in theory however both attempts could destroy the universe.

Not just time travel, but also Freezing and hyper sleep. If you freeze yourself while you are not eaten, shot and sick, you won't wake or move until the future.

Like Alien films, Prometheus and Pandorum, the hyper sleep is also the quickest way into the future

second, minute, hour, day, week, fortnight, month, year, decade, century, millennium.

It's neither, 12 noon and 12 midnight are just that although there are a lot of illiterates in positions where they should know better!)

23 weeks, 6 days, 6 hours, and 4 minutes.

5 hours and 50 min

1 hour = 3600 seconds

21600 seconds / 3600 seconds/hr = 6 hr

5 hours and 17 minutes.

1 hour 43 minutes

Four hours and fifty minutes

277.766667 minutes.

1 millisecond = 1/1000 seconds. To convert a value in milliseconds to seconds, divide by 1000.

I'll have to assume you mean 30 seconds. This is 0.5 minutes.

am and pm change at 12:00 noon. before 12:00 noon is am. at 12:00 it is noon. after 12:00 noon it is pm.

5:50 pm

1h = 60 min

so 1h and 20 min = 60 + 20 = 80 min