Yes we can do timings with the Magician, it's probably not the most specific, but it can give a general idea.
I sometimes only use the major arcana in a reading because it has more clout than the miner arcana (suits). Particuarly if I just want a simple clear reading.
The Magician is a simple card when it comes to timings because it hasnt a time as such...it represents now, or certainly within days.
The Magician represents a result, an achievement, something that is happening right now.
To narrow it down specifically, you could match with another major arcana or minor.
The Magician is number one in the deck, he is the 'first' and arrives before the others, if you remember that it may help to understand the timing.
The Magician differs from the Fool, who may appear to lead the deck, in the sense that the Magician has an identity with a number. The Fool has no identity and is merely a wild card, a floater in the deck.
I would be interested to here other ways of timing with the Magician as alot of people do not use the Major Arcana for timings.
Have a great day
Sarah