General RapidKL website says 6am. Is 6am starting from the last station like Putra Height / Gombak? How about those mid stations?
Let's say I want to take a train from Asia Jaya to KLCC as early as possible. If 6am train departs from Putra Height, it will take a long time (50 minutes?) before it even arrives at Asia Jaya.

I had never used their rapidKL apps before, I always use Google Maps

But I have been using Kelana Jaya train for years, if you wanna estimate when you will reach there then I usually do like this:

- each station will take about 3mins, but if worse case scenario then 3.5 or 4mins for each station
- don't forget to add in waiting time for train. Either every +3mins during peak hour OR 7-10mins outside of peak hour

for example
Putra Heights to Asia Jaya: 27 stations x 3mins = 81mins or 1hr 21mins, plus waiting time then ~1hr 30mins

Putra Heights to KLCC: 11 stations x 3mins = 33min, plus waiting time then ~40mins

This is assuming the train is in healthy status, no stuck or delay status.

It's because departure time put 5.10am, total time include waiting time until 6am departure from Putra Heights, TS want to know 6am first train start from 2 end of station or all stations, because rapidkl didn't provide any info regarding first train on their site.