Trunc
Create date trunc by day, week, month using text filter - Get Help
Excel TRUNC function
How to use the TRUNC Function in Excel - 3 Examples
Excel Tutorial: Rounding with TRUNC, INT and ROUND functions
trunc() in Python - GeeksforGeeks
How to Truncate Numbers in Excel – From Basics to Advance
TRUNC Function in Excel
Using TRUNC in SQL to get the first date in a period - AMIS