Modern Chrono DateTime AddMonths

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DateTime.AddMonths

Returns the date-time moved by whole months, clamping the day to the month's end.

Syntax

DateTime.AddMonths( n )

Examples

#import "std/chrono"
using chrono

dim as DateTime d = DateTime( 2026, 1, 31, 12, 0, 0, 0 )

'' The day CLAMPS to the end of the target month, never rolls over
print d.AddMonths( 1 ).ToIsoString( )    '' 2026-02-28T12:00:00

'' So it does not round-trip
print d.AddMonths( 1 ).AddMonths( -1 ).Day       '' 28

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Library: Chrono Date and Time
Category: Date and Time (Chrono)
Documented under: The Members