Regex - how to get time and date and get ISO8601 timestamp -

i have text

2014-01-30 10:15 text here 2014-01-30 10:20 other text here

i need regex matches timestamp group in iso 8601 format.

required output:

2014-01-30t10:15z 2014-01-30t10:20z

with regex can't want, replace space 't' , append 'z @ end.

^(?<timestamp>\s+ \s+)

does know how solve problem?

--- update ---

btw, i'm using http://rubular.com/ test regex

you perhaps modify current regex bit to:

^(\s+) (\s+).*

and replace $1t$2z

Test