∆ As Jack walks through the Lobby to disconnect the office radio, the reception clock reads 11:46.

∆ In the scene immediately preceding, Wendy’s watch reads 11:15, thirty minutes earlier. Barring time-compression necessary in any narrative film, we can assume the Lobby clock to be 30 minutes fast.

∆ The following night, as Jack attacks his family with an axe, Wendy’s watch reads 5:10. 

∆ After Danny escapes through the bathroom window and runs down the hallway behind the Lobby to hide, the clock reads 5:15. About five minutes screen time have elapsed since the last time display, so the time pieces are generally in sync.

∆ However when Hallorann enters the Lobby a few screen time minutes later, the clock reads 4:50. 

∆ The next time displayed in the film, a few minutes screen time later, is 5:25. Now it seems that on the other side of Wednesday, the Lobby clock is 30 minutes slow.
Note that it is unclear whether this is PM or AM. Both times would be shrouded in darkness. This is a similar quandary to question posed by the 6:55 time of Wendy’s daylight exit from the Hotel explored in our previous What Time Is It? installment — not really enough time for it to be AM and way too much time for it to be PM. If it would take Hallorann “about five hours” from 9:05AM to reach Durkin’s, then it would either take three or fifteen hours for Hallorann to reach the Overlook. Perhaps, like the magical number 42, we are being shown a too-small thing being compared to a too large thing, but both being equal, the old microcosm=macrocosm mystic equation. 
The Lobby clock being 30 minutes fast on Wednesday, but 30 minutes slow on Thursday (or is it Friday?) speaks to the slowing down, stopping and reversing time inherit in the solstice, and in the projected year of The Shining, 1977.