UKismetMathLibrary::Add_DateTimeDateTime
#include "Kismet/KismetMathLibrary.h"
Access: public
Specifiers: staticUFUNCTIONBlueprintPure
Description
Adds two FDateTime values by summing their raw tick counts and returns the result as a new FDateTime. This is an unusual operation with no standard calendar meaning — in most cases you want Add_DateTimeTimespan instead.
Caveats & Gotchas
- • Adding two wall-clock dates (e.g. 2024-01-01 + 2024-06-15) produces a nonsensical result because the tick sum does not correspond to any meaningful date. This function exists for Blueprint operator completeness, not for typical calendar arithmetic.
- • Overflow is likely for any pair of non-trivially small FDateTime values, since tick counts representing real dates are already large int64 values. The result silently wraps when overflow occurs.
Signature
static UE_INL_API FDateTime Add_DateTimeDateTime(FDateTime A, FDateTime B);Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| A | FDateTime | First date-time operand. | — |
| B | FDateTime | Second date-time operand. | — |
Return Type
FDateTime Example
Summing tick offsets (unusual use case) C++
// Rarely needed — prefer Add_DateTimeTimespan for shifting dates.
// Use only when both values represent raw tick offsets, not calendar dates.
FDateTime OffsetA(FTimespan::FromHours(2).GetTicks());
FDateTime OffsetB(FTimespan::FromHours(3).GetTicks());
FDateTime Combined = UKismetMathLibrary::Add_DateTimeDateTime(OffsetA, OffsetB);Tags
Version History
Introduced in: 4.0
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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