addToDateTime

Arguments

1. Unit to add as a string:
   • Year, Years, Y or u for years
   • Month, Months, M or L for months
   • Week, Weeks or W for weeks
   • Day, Days or d for days
   • Hour, Hours or H for hours
   • Minute, Minutes or m for minutes
   • Second, Seconds or s for seconds
   • Millisecond, Milliseconds or A for milliseconds
2. Amount to add as a long. It can be a negative value to subtract an amount of time.
3. Input datetime.

Examples