Somnia Mod 1.7.10
The multiplier value on the left (in red) is the speed Minecraft is running at. The default value without this mod is of course “x1” which is 20 ticks per second. You can calculate your theoretical TPS (ticks per second) value by combining the multiplier with 20. This value will vary depending on how active your world is, how many mods and such you have and your CPU, Somnia does balance the multiplier to help prevent FPS drop in single player. The time value on the right (in white) is the primary (overworld) world time.
This mod requires only the Forge API. For 1.6.2 the mod is to be installed into the /mods directory, however for 1.5.2 the mod is to be installed into the /coremods directory. If you need any help installing there’s a lot of tutorials on YouTube.