#[\NoDiscard]
 public add(DateInterval $interval): DateTimeImmutable

public static createFromFormat(string $format, string $datetime, ?DateTimeZone $timezone = null): DateTimeImmutable|false

public static createFromInterface(DateTimeInterface $object): DateTimeImmutable

public static createFromMutable(DateTime $object): static

public static getLastErrors(): array|false

#[\NoDiscard]
 public modify(string $modifier): DateTimeImmutable

public static __set_state(array $array): DateTimeImmutable

#[\NoDiscard]
 public setDate(int $year, int $month, int $day): DateTimeImmutable

#[\NoDiscard]
 public setISODate(int $year, int $week, int $dayOfWeek = 1): DateTimeImmutable

#[\NoDiscard]
 public setTime(
 int $hour,
 int $minute,
 int $second = 0,
 int $microsecond = 0
): DateTimeImmutable

#[\NoDiscard]
 public setTimestamp(int $timestamp): DateTimeImmutable

#[\NoDiscard]
 public setTimezone(DateTimeZone $timezone): DateTimeImmutable

#[\NoDiscard]
 public sub(DateInterval $interval): DateTimeImmutable

public diff(DateTimeInterface $targetObject, bool $absolute = false): DateInterval

public format(string $format): string

public getOffset(): int

public getTimestamp(): int

public getTimezone(): DateTimeZone|false

public __serialize(): array

public __unserialize(array $data): void

#[\Deprecated] 
 public __wakeup(): void

}