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SGT to IRST Time Converter

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

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

sgt to irst Quick Facts

Use this SGT to IRST converter to compare Singapore and Iran time, check the 4 hours and 30 minutes gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 2:00 PM SGT / 9:30 AM IRST.

Time Difference
Iran Standard Time is 4 hours and 30 minutes behind Singapore Time
Useful when deadlines, handoffs, or calls cross workday boundaries.
Best Call Window
Best overlap starts around 2:00 PM sgt and 9:30 AM irst.
Common Use Cases
Useful for remote teams, customer support windows, travel planning, webinars, and same-day deadline handoffs.

How to Convert sgt to irst

Converting between Singapore Time and Iran Standard 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 sgt Time

Pick the date and time in Singapore Time (UTC +8) that you want to convert. Hit "Now" to load the current sgt time instantly, or use "+1h" to step forward and compare.

Read the irst Result

The equivalent Iran Standard Time (UTC +3:30) time appears immediately. Since irst is 4 hours and 30 minutes behind of sgt, most daytime conversions stay on the same calendar day.

Copy or Fine-Tune

Click "Copy Time" to grab the irst 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 sgt to irst Converter

Align sgt–irst Meetings Instantly

When someone in Singapore suggests 2:00 PM sgt, that's 9:30 AM irst. 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 sgt times can land on a different date in irst 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 sgt (UTC +8) and irst (UTC +3:30) 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 sgt-Timed Event

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

sgt to irst Time Conversion Chart

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

Complete 24-Hour Conversion

Singapore Time to Iran Standard Time full day schedule

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

SGT vs IRST — 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.

Reviewed by Editorial team Updated