Can my husband enter Thailand on a single entry tourism visa valid from and until certain dates?

The main concern revolves around the validity dates on a single entry tourism visa for Thailand. The 'valid from' and 'valid until' dates indicate the timeframe in which the visa can be utilized for entry, not the duration of stay. The tourist visa typically allows for a 60-day stay upon entry, and it appears that the user seeks confirmation on whether their husband can arrive within the visa's validity period and stay for the full 60 days.