Worked from 09:00-00.00+ every day for 6 days straight, then for about 4 hours that Sunday (including over public holidays which were that week).

Clients agreed release date based on some interviews with publications, which meant the previous target date was moved up 2 weeks as they were pushing marketing for this new date.

Aside from having to implement a new 3rd party API which touched ~35% of the system there was a lot more that needed to be finished before release (including an entire user flow that was at the mercy of a 3rd party).

Safe to say I took a day or two off the week after.