What is the minimum duration of stay outside of Chiang Mai that requires a TM 30 update upon return?

The user, holding a US passport and on an education visa extension, inquired about the minimum duration outside of Chiang Mai that would necessitate updating their TM 30 upon return. They also asked whether the hotel would handle the TM 30 for a short stay in Lampang. A comment from the community indicated that the TM 30 update is only required if traveling abroad.