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IRST to SGT Time Converter

Convert time from IRST to SGT. Enter any time to see the equivalent SGT time, compare current IRST and SGT times side by side, and find overlapping business hours for calls and meetings.

irst Iran Standard Time
...
sgt Singapore Time
...
Select a time to convert

irst to sgt Quick Facts

Use this IRST to SGT converter to compare Iran and Singapore time, check the 4 hours and 30 minutes gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 9:00 AM IRST / 1:30 PM SGT.

Time Difference
Singapore Time is 4 hours and 30 minutes ahead of Iran Standard Time
Useful when deadlines, handoffs, or calls cross workday boundaries.
Best Call Window
Best overlap starts around 9:00 AM irst and 1:30 PM sgt.
Common Use Cases
Useful for remote teams, customer support windows, travel planning, webinars, and same-day deadline handoffs.

How to Convert irst to sgt

Converting between Iran Standard Time and Singapore Time means accounting for a 4 hours and 30 minutes gap — here's how to do it in under 10 seconds with no sign-up.

Enter Your irst Time

Pick the date and time in Iran Standard Time (UTC +3:30) that you want to convert. Hit "Now" to load the current irst time instantly, or use "+1h" to step forward and compare.

Read the sgt Result

The equivalent Singapore Time (UTC +8) time appears immediately. Since sgt is 4 hours and 30 minutes ahead of irst, most daytime conversions stay on the same calendar day.

Copy or Fine-Tune

Click "Copy Time" to grab the sgt result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — useful when Daylight Saving Time changes the gap.

Why Choose Our irst to sgt Converter

Align irst–sgt Meetings Instantly

When someone in Iran suggests 9:00 AM irst, that's 1:30 PM sgt. This converter shows the overlap so both sides agree on one slot — no back-and-forth.

Spot Date-Line Shifts at a Glance

Late-night irst times can land on a different date in sgt because of the 4 hours and 30 minutes offset. The converter labels "next day" or "previous day" next to the result so you never send a message a day early or miss a deadline.

Handles DST Transitions Automatically

The half-hour offset between irst (UTC +3:30) and sgt (UTC +8) already makes mental math tricky — add Daylight Saving Time and the gap can shift further. This converter uses live UTC offsets, so you're always accurate.

Never Miss a irst-Timed Event

Product launches, sports matches, and webinars are often announced in irst. Convert the event time to sgt so you know exactly when to tune in — with a 4 hours and 30 minutes difference, a morning event in Iran falls during work hours in Singapore.

irst to sgt Time Conversion Chart

Quick-reference conversion table covering every hour of the day at a glance.

Complete 24-Hour Conversion

Iran Standard Time to Singapore Time full day schedule

12:00 AM
irst
→
4:30 AM
sgt
1:00 AM
irst
→
5:30 AM
sgt
2:00 AM
irst
→
6:30 AM
sgt
3:00 AM
irst
→
7:30 AM
sgt
4:00 AM
irst
→
8:30 AM
sgt
5:00 AM
irst
→
9:30 AM
sgt
6:00 AM
irst
→
10:30 AM
sgt
7:00 AM
irst
→
11:30 AM
sgt
8:00 AM
irst
→
12:30 PM
sgt
9:00 AM
irst
→
1:30 PM
sgt
10:00 AM
irst
→
2:30 PM
sgt
11:00 AM
irst
→
3:30 PM
sgt
12:00 PM
irst
→
4:30 PM
sgt
1:00 PM
irst
→
5:30 PM
sgt
2:00 PM
irst
→
6:30 PM
sgt
3:00 PM
irst
→
7:30 PM
sgt
4:00 PM
irst
→
8:30 PM
sgt
5:00 PM
irst
→
9:30 PM
sgt
6:00 PM
irst
→
10:30 PM
sgt
7:00 PM
irst
→
11:30 PM
sgt
8:00 PM
irst
→
12:30 AM
sgt
(next day)
9:00 PM
irst
→
1:30 AM
sgt
(next day)
10:00 PM
irst
→
2:30 AM
sgt
(next day)
11:00 PM
irst
→
3:30 AM
sgt
(next day)
The two zones in context

IRST vs SGT — cities and working rhythm

SGT — Singapore Time
Primary cities: Singapore, Kuala Lumpur, Manila, Hong Kong (HKT is the same offset)

Singapore / KL / Manila business hub — Southeast Asia's regional HQ zone. Business hours 9 AM – 6 PM SGT. Overlaps well with India (early SGT afternoon = late IST afternoon) and Australia (late morning SGT = early afternoon AEDT). Long time gap with the US means transactions bridging Singapore / SF are usually async.

Popular irst Time Converters

Explore more irst conversions for major business and travel corridors. Each page includes a 24-hour chart, time difference summary, and meeting overlap guidance.

Convert Other Time Zones to sgt

Find the time difference from any major zone into Singapore Time. Use these pages when scheduling with Singapore from a different region.

🌍 Swap direction — SGT to IRST Converter
Reviewed by Editorial team Updated