ExactTimeMessages/Tweak.xm

@interface UIDateLabel : UILabel
@property (nonatomic, strong) NSDate *date;
@end
static bool is24h;


%hook CKConversationListCell
-(void)layoutSubviews{
	%orig;
	if(MSHookIvar<UIDateLabel *>(self, "_dateLabel")){
		UIDateLabel *dateLabel = MSHookIvar<UIDateLabel *>(self, "_dateLabel");
		if(![dateLabel.text containsString:@":"]){
			NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
			if(is24h){
				[dateFormatter setDateFormat:@" • HH:mm"];
			}else{
				[dateFormatter setDateFormat:@" • h:mm a"];
			}
			dateLabel.text = [dateLabel.text stringByAppendingString:[dateFormatter stringFromDate:dateLabel.date]];
		}
	}
}
%end

%ctor{
	NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
	[formatter setLocale:[NSLocale currentLocale]];
	[formatter setDateStyle:NSDateFormatterNoStyle];
	[formatter setTimeStyle:NSDateFormatterShortStyle];
	NSString *dateString = [formatter stringFromDate:[NSDate date]];
	NSRange amRange = [dateString rangeOfString:[formatter AMSymbol]];
	NSRange pmRange = [dateString rangeOfString:[formatter PMSymbol]];
	is24h = (amRange.location == NSNotFound && pmRange.location == NSNotFound);
}