I like this and could see myself using it, but think seconds are not really necessary - it makes it a little harder to read and I'm not exactly going to set my alarm for 06:21:57.
Also, perhaps when pressing 'I know my bed time' the text above should fade/slide out and be replaced by the other section? Something maybe like this: http://i.imgur.com/OZ8t6NI.png
Finally, not sure if it's intentional but good call on going for white on black: sleepti.me does the last thing I want to see when I go to sleep it a glowing white background!
Yes I was on the fence about the seconds. I wanted to show that it was updating in real time. Sometimes I've left sleepyti.me on for a while and set the alarm only to discover that it's been an hour or so since I refreshed the page.
I agree about the content replacement, and will work on that. I made this in about two hours last night playing with ChaplinJS so I just finished it up quickly and decided to post it now. I like the button change too, if you don't mind me using that?
The white on black was a last minute change, my eyes were getting tired so I changed the CSS and it was quite pleasant :) Thanks again for the feedback!
I can't access it on my mobile at the moment as I'm at work and for some reason right in a 3G blind spot, but on my PC it's looking very nice.
Honestly not sure what you could change/add now as it's pretty much perfect for what it's aiming to be! Only possible thing is aligning the 'I want to go to bed at this time' textbox time format with the other times displayed, i.e. the textbox uses 'HH:mm:ss' while everything else uses 'hh:mm am/pm'.
EDIT: just checked it on my iPhone. Looks and works great. 'I want to go to bed now' drop down functions really well.
Also, perhaps when pressing 'I know my bed time' the text above should fade/slide out and be replaced by the other section? Something maybe like this: http://i.imgur.com/OZ8t6NI.png
Finally, not sure if it's intentional but good call on going for white on black: sleepti.me does the last thing I want to see when I go to sleep it a glowing white background!