I've to admit that I am not a detailed person who will record precised dates when my baby girl reached each milestone but do roughly recall when they took place....
Flipped over & sit up +4 months
Cruise around with help of a walker +4 months
Crawling +5 months
Stand up with aid of other things surrounding her +7 months
Stand up for few seconds without holding on to things +8 months
Walk 1-2 steps without help +10 months