There should be a folder for This Month.

You can check the History in the History Manager (Library) and make the Most Recent Visit column visible and sort by this column to see if there is history from those dates.

Now that's really odd. Yesterday, there was no entry for This month. Now, there is.

I wouldn't have checked again if you hadn't replied. Even after seeing your response, my reaction was: This month isn't listed. But I decided not to be stubborn and to double-check.

Thank you!

Since This month mysteriously appeared, I didn't try your suggestion. But I appreciate your taking the time to write and help.

Do you still have older history because if This Month had been deleted previously then a new This Month folder will have been created once there was new history for this month because you have visited websites.

I can't tell for 100% sure, but I believe you're right. But how did This month get deleted?