Generate time from date+time variable

[sarah bosompem]

Hello All,

I am a beginner with Stata, and I have a Time variable that looks like this:

Time
31dec1899 00:01:00
31dec1899 00:02:00
31dec1899 00:03:00
31dec1899 00:04:00
31dec1899 00:05:00
31dec1899 00:06:00
31dec1899 00:07:00
31dec1899 00:08:00
31dec1899 00:08:59
31dec1899 00:10:00

The storage type for this variable is double and display format %tc.

1. I just need the time, that is 00:01:00. How can I generate it from the variable?
2. Additionally, How do i change the time of 00:08:59 to 00:09:00?

Thank you,
Sarah