UNix time UTC Data

[teddyg18]

I have data in the follwing form:
i j
0.1479039937257767 2008.10.16 07:42:21
0.1504023969173431 2008.10.16 07:42:29
0.1529008001089096 2008.10.16 07:42:38
0.1553992033004761 2008.10.16 07:42:46
0.1583140045404434 2008.10.16 07:42:56
0.1612288057804108 2008.10.16 07:43:04
0.163727194070816 2008.10.16 07:43:12
0.1666419953107834 2008.10.16 07:43:20
0.1691403985023498 2008.10.16 07:43:30
0.1716388016939163 2008.10.16 07:43:38
0.1745536029338837 2008.10.16 07:43:47
0.177468404173851 2008.10.16 07:43:55
0.1803832054138184 2008.10.16 07:44:05

in which the i is magnetic field in Tesla and the j is time. I would like to create a plot that graphs time versus magentic field. my problem is how do i get C to read the j component as an actual value to read and plot on the x axis?
is there any way i can utilize the time() function to transform it into a real value?

[helios]

You could fill a tm and pass that to one of the ctime functions. I forget which one, at the time; there's one that converts a tm to a time_t, which is the number of seconds since the Epoch (19700101T000000Z). Here you have the advantage that the input is already nicely formatted.