I don't think that there is any difference. I would either use 'with' or 'on' in this situation. It sounds less natural to me to say 'in'.

Typically, you use "in" when you are indicating an enclosed region/time, a position for space that is not open. You may also use it for towns, provinces, states, countries, etc. "I am in the store." "she is in a relationship" "He is in Brazil" You may use "on" with street names, dates, and when you are indicating location on a surface or position on an area. "The tattoo is on her arm" "I am on Main street." "I have a test on Friday/I have an exam on Friday" Therefore: "I am on schedule" (position in "time"/schedule) "I am behind on my report" ("schedule of when I wanted to finish the report") "I have a date on Saturday"

Typically, you use "in" when you are indicating an enclosed region/time, a position for space that is not open. You may also use it for towns, provinces, states, countries, etc. "I am in the store." "she is in a relationship" "He is in Brazil" You may use "on" with street names, dates, indicating location on a surface or position on an area. "The tattoo is on her arm" "I am on Main street." "I have a test on Friday/I have an exam on Friday" Therefore: "I am on schedule" (position in "time"/schedule) "I am behind on my report" ("schedule of when I wanted to finish the report") "I have a date on Saturday"

thank everyone for good answer. ^^

There's not necessarily a difference. It's just that "on" is the more accepted form.