Dr. Brown's office hours are always in GRW 258. On Monday's, TA office hours are in Moore 207. On all other days they are in Moore 100C. Many TA office hours overlap so that there will be more people in the labs to help you.
Keep in mind that this calendar may not reflect university holidays, Spring break, and exam period, and occasionally changes may be announced on the course web site and via Piazza that are not reflected here.