What is the promotion period for 2023 "March Expo"?

The warm-up period for 2023 " March Expo" is from Feb 20th, 2023, 00:00:00 to Feb 28th, 2023，23:59:59 PT; and the 2023 " March Expo" promotion period is from March 1st, 2023，00:00:00 to March 31th, 2023，23:59:59 PT