Daylight Saving Time (DST)
It may all seem a bit confusing dealing with Universal Time (UT), Northern Territories Time (NT), Southern Peninsula Time (ST) with the complications of adjusting for Daylight Saving Time DST. However, as long as we write down what time we are dealing with, and use the same methodology, things are made considerably easier.
NP (Northern Peninsula) is in Zone 0 and the standard time for the Northern Territories. It is the same as UT (Universal Time) and is equivalent to GMT (Greenwich Mean Time / British Standard Time).
SP (Southern Peninsula) is in Zone -1 and the standard time for the Southern Peninsula. It is equivalent to French Standard Time and is one hour ahead of GMT.
One hour must be added in the summer to Northern Peninsula NP or Southern Peninsula SP to get NP DST and SP DST. Daylight Saving Time (DST) and is the local time you would have on your wrist watch during the summer months.
Daylight Saving Time in the UK is British Summer Time BST
Daylight Saving Time in France is French Summer Time
Remember British Summer Time refers specifically to the UK, however DST Daylight saving time is used for any times zones that adjust the clocks for summer time.
As you can see there are lots if ways of expressing the time. To held get your head around it all the best thing to do is to adopt a system of writing the times that can be used repeatedly without mistakes. For instance just writing 1340hrs means very little but writing its as 1732hrs DST zone-1 or 1732hrs SP DST makes things much clearer.