Build an employee schedule page

Each employee can be in a different timezone. The page should be displaying the schedule of everybody depending on the timezone of the person looking at the schedule. On the schedule you can have three status : online, offline and on lunch. Majority employee is working on the same hours across the year but some for some of them it is changing every week. For example : 8:00 to 4:00 week 1, 9:00 to 5:00 week two and back to 8:00 to 4:00 the week after. No design require.