Version 1.0

ExactTimeMessages.plist

+{ Filter = { Bundles = ( "com.apple.MobileSMS" ); }; }

Makefile

+export ARCHS = armv7 arm64
+
+include $(THEOS)/makefiles/common.mk
+
+TWEAK_NAME = ExactTimeMessages
+ExactTimeMessages_FILES = Tweak.xm
+ExactTimeMessages_CFLAGS = -fobjc-arc
+
+include $(THEOS_MAKE_PATH)/tweak.mk
+
+after-install::
+	install.exec "killall -9 MobileSMS"

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);
+}

control

+Package: com.gilshahar7.exacttimemessages
+Name: ExactTimeMessages
+Depends: mobilesubstrate
+Version: 1.0
+Architecture: iphoneos-arm
+Description: Adds an exact time to the message cells in the stock messages app.
+Maintainer: gilshahar7
+Author: gilshahar7
+Section: Tweaks